expression meaning
numeracyThe noun "numeracy" means "the capacity to understand and work with numbers."
aThe indefinite article "a" means "one (1)."
Usage: The indefinite article "a" should be used before a consonant sound, and the indefinite article "an" should be used before a vowel sound.
Example: "Enclose an envelope with a stamp."
a-The metric prefix symbol a- (metric prefix: "atto-" ) denotes a multiple of ten to the negative eighteenth power (10-18 = 1E-18 = 0.000 000 000 000 000 001) as defined by Le Système International d'Unités (SI).
ace1. The noun and adjective "ace" means "one (1)." An "ace" in parlor games is "a playing card, die, or domino that represents the number one." An "ace" in golf is "a hole made in one stroke," also called a "hole-in-one." An "ace" in racket sports, volleyball, or handball is "a point made on a serve without contact by the opponent."
2. The noun and adjective "ace" means "of first (1st) or high rank or quality."
3. In military aviation, the noun "ace" means "an aviator who has destroyed five (5) or more enemy aircraft." More generally, "ace" means "one who excels at something."
affirmativeThe adjective and noun "affirmative" is a logical value. "Negative" and "affirmative" are sometimes used as a binary logic pair.
algebraic numberAn algebraic number is a number that can be expressed as a root of a polynomial equation with integer coefficients. Examples include 0, 1, i, 2½, φ, -3.456, 7+8i, 9·ei·π/4, etc. See also "Algebraic Number."
allThe pronoun and adjective "all" means "the whole of" or "every member of."
almostThe adverb and adjective "almost" means "slightly less than the specified amount."
American SystemThe "American number naming system" or "American System" is commonly used in North America and many other places to name very large and very small numbers. The "American System" is derived from the earlier "Chuquet System." The "American System" uses a Latin-based numeric prefix to denote a one-plus-an-integer power of one thousand (1,000 = 103 = 1E+03), thus:

"(prefix)illion" = 1,000(1+prefix) = 103×(1+prefix)

Example: In the "American System," one billion = 103×(1+2) = 103×3 = 109 = 1E+09 = 1,000,000,000.
See also Number Naming Systems.
anThe indefinite article "an" means "one (1)." See usage note at "a."
annualThe adjective "annual" means "recurring once (1) each year." See also "yearly."
Apéry's Constant"Apéry's Constant" is an irrational number approximately 1.202 056 903 160. See also "Apéry's Constant."
Archimedes' Constant"Archimedes' Constant" (symbol: π {Greek lower case letter pi} ) is the ratio of the circumference of a circle to its diameter. π is a transcendental number approximately 3.141 592 653 590. An Egyptian scribe named Ahmes (about 1680-1620 BC) described a (then several hundred year old) calculation of π to be 256/81 = 3.160. Greek mathematician and scientist Archimedes (287-212 BC) estimated the value of π to be 211875/67441 = 3.141 635. Chinese mathematician and astronomer Tsu Ch'ung Chi (430-501 AD) refined the value of π to 3.141 592 650. See also "Archimedes' Constant" and "Pi."
atto-The metric prefix "atto-" (prefix symbol: a- ) denotes a multiple of ten to the negative eighteenth power (10-18 = 1E-18 = 0.000 000 000 000 000 001) as defined by Le Système International d'Unités (SI).
azygousThe adjective "azygous" means "occurring singly (1) and not as a pair (2)."
BThe symbol "B" represents a logarithmic power measurement in bels.
baker's dozenThe compound noun "baker's dozen" means "thirteen (13)."
barelyThe adverb "barely" means "only slightly more than a required minimum."
baseThe noun and adjective "base" means "a number notation system based on the hyphenated suffix number." Thus, base_ten (base_10) is the common decimal positional number notation system. See also "numeral."
base eightThe compound noun and adjective "base eight (base_8)" means "a number notation system based on the number eight (8)." The modern octal or base eight positional number notation system uses the numerals 0, 1, 2, 3, 4, 5, 6, and 7 to represent the integers zero through seven. See also "base."
base fiveThe compound noun and adjective "base five (base_5)" means "a number notation system based on the number five (5)." See also "base."
base sixteenThe compound noun and adjective "base sixteen (base_16)" means "a number notation system based on the number sixteen (16)." The modern sexdecimal or base sixteen positional number notation system uses the numerals 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F to represent the integers zero through fifteen. See also "base."
base tenThe compound noun and adjective "base ten (base_10)" "a number notation system based on the number ten (10)." The common decimal or base ten positional number notation system uses the numerals 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 to represent the integers zero through nine. See also "base."
base twelveThe compound noun and adjective "base twelve (base_12)" means "a number notation system based on the number twelve (12)." See also "base."
base twentyThe compound noun and adjective "base twenty (base_20)" means "a number notation system based on the number twenty (20)." See also "base."
base twoThe compound noun and adjective "base two (base_2)" means "a number notation system based on the number two (2)." The modern binary or base two positional number notation system uses the numerals 0 and 1 to represent the integers zero and one. See also "base."
belThe noun and adjective "bel" (symbol: B ) is a logarithmic comparison of power levels representing "a ratio of ten (10)." Two (2) bels equal a power ratio of one hundred (100), and three (3) bels equal a power ratio of one thousand (1,000).
bi-The Latin-based numeric prefix "bi-" means "two (2)."
biannualThe adjective "biannual" means "recurring twice (2) per year."
biathlonThe noun "biathlon" means "an athletic competition consisting of two (2) separate events."
bicentenary1. The noun and adjective "bicentenary" means "a group of two hundred (200)."
2. The noun and adjective "bicentenary" means "a period of two hundred (200) years."
3. The noun and adjective "bicentenary" means "a two hundred (200) year anniversary."
4. The adjective and noun "bicentenary" means "two hundredth (200th) in rank or order."
bicentennial1. The adjective and noun "bicentennial" means "recurring every two hundred (200) years."
2. The adjective and noun "bicentennial" means "lasting two hundred (200) years."
3. The noun and adjective "bicentennial" means "a two hundred (200) year anniversary."
bicentenniumThe noun and adjective "bicentennium" means "a period of two hundred (200) years."
bicentiquadragesimalThe adjective "bicentiquadragesimal" means "based on the number two hundred forty (240)." See also Base Number Systems.
bicentisexquinquagesimalThe adjective "bicentisexquinquagesimal" means "based on the number two hundred fifty-six (28 = 256)." See also Base Number Systems.
bicolorThe adjective and noun "bicolor" means "having two (2) distinct colors."
bicycleThe noun, adjective, and verb "bicycle" means "having two (2) wheels."
biennaryThe noun and adjective "biennary" means "a group of two (2) or a period of two (2) years."
biennial1. The adjective and noun "biennial" means "recurring every two (2) years."
2. The adjective and noun "biennial" means "lasting two (2) years."
3. The noun and adjective "biennial" means "a two (2) year anniversary."
bienniumThe noun and adjective "biennium" means "a period of two (2) years."
bigamistThe noun and adjective "bigamist" means "a person who is married (usually illegally) to two (2) (or more) spouses at the same time."
bigamousThe adjective "bigamous" means "being married (usually illegally) to two (2) (or more) spouses at the same time."
bigamyThe noun "bigamy" means "(usually illegal) marriage to two (2) (or more) spouses at the same time." See usage note at "polygamy."
bilateralThe adjective "bilateral" means "having two (2) sides."
billiardThe noun and adjective "billiard" means "multiplied by ten to the fifteenth power (1015 = 1E+15 = 1,000,000,000,000,000)" in the modified Chuquet number naming system.
billionThe noun and adjective "billion" means multiplied by ten to the ninth power (109 = 1E+09 = 1,000,000,000) in the American number naming system, but means multiplied by ten to the twelfth power (1012 = 1E+12 = 1,000,000,000,000) in the Chuquet number naming system. See also Large Numbers.
billions and billionsThe expression "billions and billions" means "an astronomically large number." This expression was popularized by American astronomer Carl Sagan (1934-1996).
bimillenary1. The noun and adjective "bimillenary" means "a group of two thousand (2000)."
2. The noun and adjective "bimillenary" means "a period of two thousand (2000) years."
3. The noun and adjective "bimillenary" means "a two thousand (2000) year anniversary."
4. The adjective and noun "bimillenary" means "two thousandth (2000th) in rank or order."
bimillennial1. The adjective and noun "bimillennial" means "recurring every two thousand (2000) years."
2. The adjective and noun "bimillennial" means "lasting two thousand (2000) years."
3. The noun and adjective "bimillennial" means "a two thousand (2000) year anniversary."
bimillenniumThe noun and adjective "bimillennium" means "a period of two thousand (2000) years."
binalThe adjective "binal" means "based on the number two (2)." See usage note at "binary." See also "base two", Integer Powers of 2, Base Number Systems, Base Number Notation.
binaryThe adjective "binary" means "having two (2) parts." See also "base two", Integer Powers of 2, Base Number Systems, Base Number Notation.
Usage: A numeral system based on the number two (2) is properly called "binal." The more common term "binary" is also appropriate since a binal digit has two (2) possible binary states: zero (0) or one (1), FALSE or TRUE, low or high, etc.
bipedThe noun "biped" means "an animal with two (2) feet."
bipedalThe adjective "bipedal" means "having two (2) feet."
bis-The prefix "bis-" means "two (2)." See also Numeric Prefixes Used In Chemistry.
bisectThe verb "bisect" means "to divide into two (2) usually equal parts.
bit1. In archaic American use, the noun "bit" means "one eighth of a dollar ($0.125)."
2. In computer terminology, the noun "bit" means "a single (1) binary unit having two (2) possible states." "Bit" is a contraction of "binary digit."
biyearly1. The adjective "biyearly" means "recurring every two (2) years."
2. The adjective "biyearly" can also mean "recurring twice (2) per year."
bothThe plural pronoun and adjective "both" means "two (2) of two (2)." See also "all."
byteIn computer terminology, the noun "byte" means "a set of eight (8) binary units having two to the eighth power (28 = 256) possible states. A byte can be used to represent a single alphanumeric character. A byte is equal to eight (8) bits, four (4) crumbs, or two (2) nibbles.
c-The traditional metric prefix symbol c- (metric prefix: "centi-" ) denotes a multiple of one one-hundredth (1/100 = 0.010).
cardinal numberA cardinal number is a nonnegative integer, e.g., 0, 1, 2, 3, 4, 5, 6, 7, etc. See also Number Names and "Cardinal Number."
Catalan's Constant"Catalan's Constant" is a real number approximately 0.915 965 594 177. See also "Catalan's Constant" and "Catalan's Constant."
centThe noun "cent" (symbol: ¢ ) means "divided by one hundred (1/100 = 0.010)." In currency, a "cent" is "one one-hundredth of a dollar ($0.01), euro (€0.01), or other monetary unit."
Usage: The plural of "cent" is normally "cents," but the preferred plural of the euro "cent" is "cent."
centenarianThe noun and adjective "centenarian" means "one hundred (100) years of age or more."
centenary1. The noun and adjective "centenary" means "a group of one hundred (100)."
2. The noun and adjective "centenary" means "a period of one hundred (100) years."
3. The noun and adjective "centenary" means "a one hundred (100) year anniversary."
4. The adjective and noun "centenary" means "one hundredth (100th) in rank or order."
centennial1. The adjective and noun "centennial" means "recurring every one hundred (100) years."
2. The adjective and noun "centennial" means "lasting one hundred (100) years."
3. The noun and adjective "centennial" means "a one hundred (100) year anniversary."
centenniumThe noun and adjective "centennium" means "a period of one hundred (100) years."
centesimalThe adjective "centesimal" means "based on the number one hundred (100)."
centi-1. The numeric prefix "centi-" means "one hundred (100)." This prefix is derived from the Latin cardinal number "centum (C)."
2. The traditional metric prefix "centi-" (prefix symbol: c- ) denotes a multiple of one one-hundredth (1/100 = 0.010).
centigradeThe adjective "centigrade" means "having one hundred (100) steps or intervals." The "Celsius temperature scale" was previously known as the "centigrade temperature scale."
centillionThe noun and adjective "centillion" means multiplied by 10303 in the American number naming system, but means multiplied by 10600 in the Chuquet number naming system. See also Large Numbers.
centioctogesimalThe adjective "centioctogesimal" means "based on the number one hundred eighty (180)." See also Base Number Systems.
centipedeThe noun "centipede" literally means "having one hundred (100) feet." A "centipede" is "an insect of the class Chilopoda."
centivigesimalThe adjective "centivigesimal" means "based on the number one hundred twenty (120)." See also Base Number Systems.
centurionThe noun "centurion" literally means "one who commands one hundred (100)." A "centurion" was "a Roman officer commanding a century, an infantry unit of about one hundred (100) soldiers."
centuryThe noun "century" means "one hundred (100)." Most commonly, "century" means "one hundred (100) years."
Usage: The Christian Era began with the year 1 A.D., thus the Twenty-First (21st) Century includes the years 2001 through 2100. In contrast, the Twenty-One Hundreds (2100's) include the years 2100 through 2199.
chiliadThe noun "chiliad" means "a group of one thousand (1,000)" or "one thousand (1,000) years."
chiliagonThe noun "chiliagon" means "a plane figure with one thousand (1,000) sides."
chiliahedronThe noun "chiliahedron" means "a solid figure with one thousand (1,000) faces."
Chuquet SystemThe "Chuquet number naming system" or "Chuquet System" was devised by French physician and mathematician Nicolas Chuquet (1445-1488), and it is still widely used today. The "Chuquet System" uses a Latin-based numeric prefix to denote an integer power of one million (1,000,000 = 106 = 1E+06), thus:

"(prefix)illion" = 1,000,000(prefix) = 106×(prefix)

Example: In the "Chuquet System," one billion = 106×2 = 1012 = 1E+12 = 1,000,000,000,000.
See also Number Naming Systems.
cinqueThe noun "cinque" means "five (5)."
cipherThe noun "cipher" means "zero (0)."
complex numberA complex number is a number that can be represented as an ordered pair consisting of a real number and an imaginary number. A complex number may be expressed as a+b·i, where a and b are real numbers and i is the imaginary unit. The complex number can also be represented as a plane vector r·ei·θ, where r = (a2+b2)½, θ = tan-1(b/a), and i is the imaginary unit. See also "Complex Number."
compound quantityA compound quantity is a quantity expressed in two or more different but related units of measure, such as dollars and cents or hours, minutes, and seconds.
Usage: Currency with a decimal subunit is usually represented as a decimal number, e.g., $139.64 CAD, $1,060.00 MXN, £62.39 GBP, €89.53 EUR. Dates in year, month, and day number may following one of several date formats: 2000-12-31 (ISO 8601), 31/12/2000 (d/m/yyyy), 31/12/00 (d/m/yy), 31/12 (d/m), 12/31/2000 (m/d/yyyy), 12/31/00 (m/d/y), and 12/31 (m/d). Time in hours, minutes, and seconds may following one of several time formats: 19:30:00 (ISO 8601), 19:30 (hh:mm), 19.30 (hh.mm), 19h30 (hh"h"mm), 1930 (hhmm), 7:30 p.m. (h:mm a.m./p.m.), 12:39.36 (m:ss.ss). Angles in degrees, minutes, and seconds are usually followed by their suffix symbols, e.g., 39° 50′ 08″ N.
count1. The verb "count" means "to enumerate by assigning sequential integers."
2. The verb "count" means "to tally by counting."
3. The noun and adjective "count" means "the act of counting."
4. The noun and adjective "count" means "the total number of objects in a set."
countlessThe adjective "countless" means "a very large number of individuals or discrete objects."
coupleThe noun and adjective "couple" means "two (2)."
Usage: When describing discrete objects, "couple" always means "exactly two (2)," as in "a couple birds." When describing continuous quantities, "couple" usually means "approximately two (2)," as in "a couple hours."
couple-threeThe slang expression "couple-three" means "at least two (2) and at most three (3)."
croreThe adjective and noun "crore" means "one hundred lakh or ten million (10,000,000 usually punctuated 1,00,00,000 in India.)"
crumbIn computer terminology, the noun "crumb" means "a pair (2) of binary units having two to the second power (22 = 4) possible states. A crumb is equal to two (2) bits or half (1/2) a nibble.
d-The traditional metric prefix symbol d- (metric prefix: "deci-" ) denotes a multiple of one tenth (1/10 = 0.100).
da-The traditional metric compound prefix symbol da- (metric prefix: "deka-" ) denotes a multiple of ten (10).
dBThe symbol "dB" represents a logarithmic power measurement in "decibels."
dea-The nonstandard prefix "dea-" denotes a multiple of ten to the thirtieth power (1030 = 1E+30 = 1,000,000,000,000,000,000,000,000,000,000).
deca-The prefix "deca-" means "ten (10)." See also "deka-," Prefixes & Words Based On Greek Number Names, and Numeric Prefixes Used In Chemistry.
decadThe noun and adjective "decad" means "a group of ten (10) members." See also Prefixes & Words Based On Greek Number Names.
decadeThe noun "decade" means "ten (10)" or "ten (10) years."
Usage: The Christian Era began with the year 1 A.D., thus the Two Hundred First (201st) Decade includes the years 2001 through 2010. In contrast, the Two Thousand Tens (2010's) include the years 2010 through 2019. See also Prefixes & Words Based On Greek Number Names.
decagonThe noun and adjective "decagon" means "a plain figure with ten (10) straight sides." See also Prefixes & Words Based On Greek Number Names.
decagram1. The noun and adjective "decagram" means "an interconnected star figure with ten (10) points formed by stellating a decagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "decagram" means "a word or character sequence consisting of ten (10) characters."
decahedronThe noun and adjective "decahedron" means "a solid figure with ten (10) planar faces." See also Prefixes & Words Based On Greek Number Names.
decalogueThe noun "decalogue" means "ten (10) rules." Capitalized, "Decalogue" means "the Ten Commandments." More generally, "decalogue" means "a basic set of binding rules." See also Prefixes & Words Based On Greek Number Names.
decameterThe noun "decameter" means "a verse consisting of ten (10) metrical feet."
decangleThe noun "decangle" means "a plane figure with ten (10) vertices."
decathlonThe noun "decathlon" means "an athletic competition consisting of ten (10) separate events."
DecemberThe month name "December" literally means "the tenth (10th) month." The Roman year began on the first (1st) day of March.
decemmillenary1. The noun and adjective "decemmillenary" means "a group of ten thousand (10000)."
2. The noun and adjective "decemmillenary" means "a period of ten thousand (10000) years."
3. The noun and adjective "decemmillenary" means "a ten thousand (10000) year anniversary."
4. The adjective and noun "decemmillenary" means "ten thousandth (10,000th) in rank or order."
decemmillennial1. The adjective and noun "decemmillennial" means "recurring every ten thousand (10000) years."
2. The adjective and noun "decemmillennial" means "lasting ten thousand (10000) years."
3. The noun and adjective "decemmillennial" means "a ten thousand (10000) year anniversary."
decemmillenniumThe noun and adjective "decemmillennium" means "a period of ten thousand (10000) years."
decemmillesimalThe adjective "decemmillesimal" means "based on the number ten thousand (10,000)." See also Base Number Systems.
decemvirThe noun "decemvir" means "one of ten (10) ruling men."
decemvirateThe noun "decemvirate" means "a ruling body of ten (10) men."
decennaryThe noun and adjective "decennary" means "a group of ten (10) or a period of ten (10) years."
decennial1. The adjective and noun "decennial" means "recurring every ten (10) years."
2. The adjective and noun "decennial" means "lasting ten (10) years."
3. The noun and adjective "decennial" means "a ten (10) year anniversary."
decenniumThe noun and adjective "decennium" means "a period of ten (10) years."
decennovalThe adjective "decennoval" means "based on the number nineteen (19)."
deci-1. The numeric prefix "deci-" means "ten (10)." This prefix is derived from the Latin cardinal number "decem (X)."
2. The traditional metric prefix "deci-" (prefix symbol: d- ) denotes a multiple of one tenth (1/10 = 0.100).
decibel1. The noun and adjective "decibel" (symbol: dB ) is a logarithmic comparison of power levels equal to "a ratio of ten to the one-tenth power (100.1)" or approximately 1.258 925 411 794. Ten (10) decibels equal one (1) bel or a power ratio of ten (10), and twenty (20) decibels equal two (2) bels or a power ratio of one hundred (100).
2. The noun and adjective "decibel" (symbol: dB ) is a logarithmic measure of sound power density relative to a power density of "ten to the negative twelfth power (10-12 = 1E-12 = 0.000 000 000 000) watts per square meter (W/m2) = 1 picowatt per square meter (pW/m2)." Ten (10) decibels are a sound level of 10 pW/m2, and twenty (20) decibels are a sound level of 100 pW/m2.
decileThe noun "decile" means "a frequency distribution divided into ten (10) equal parts."
decillionThe noun and adjective "decillion" means multiplied by 1033 in the American number naming system, but means multiplied by 1060 in the Chuquet number naming system. See also Large Numbers.
decimalThe adjective "decimal" means "based on the number ten (10)." See also base ten, Base Number Systems, and Base Number Notation.
decimal formatThe compound noun and adjective "decimal format" means "the base ten (base_10) number notation system." See also Decimal Number Names.
decimal fractionThe compound noun and adjective "decimal fraction" means "a fraction expressed in decimal format." See also Decimal Fraction Names.
decimal numberThe compound noun and adjective "decimal number" means "a real number expressed in decimal format." See also Decimal Number Names.
decimal pointThe compound noun and adjective "decimal point" means "the punctuation mark (either a period (.) or a comma(,)) placed to the right of the units (1s) digit of a real number in standard decimal format." See also Decimal Number Names.
decimateThe verb "decimate" literally means "to kill one out of ten (1/10 = 0.100)." More generally, "decimate" means "to destroy a substantial portion."
Usage: "Decimate" is often erroneously used to mean "to exterminate" or "to destroy completely." The common expression "completely decimate" is both illogical and confusing.
Origin: Roman military tacticians reasoned that a military unit could continue to fight effectively if less than 10% of its members were killed. A unit that suffered more than one in ten killed usually had to reorganize before continuing a campaign. Generals of the Roman Imperial Army later used this rule of thumb to punish cowardly or disobedient legions. The members of the unit to be punished by decimation were lined up unarmed in a single file between two fully armed legions of loyal soldiers. The soldiers were counted in order from one to ten, and each unlucky tenth soldier was executed on the spot. The survivors of this ruthless punishment were returned to duty to face death another day.
decimationThe noun "decimation" literally means "the killing of one out of ten (1/10 = 0.100)." More generally, "decimation" means "the destruction of a substantial portion." See also "decimate."
dectetThe noun "dectet" means "a group of ten (10) members."
decupleThe verb, adjective, adverb, and noun "decuple" means "multiply by ten (10)."
decurionThe noun "decurion" literally means "one who commands ten (10)." A "decurion" was "a Roman officer commanding a cavalry unit of about ten (10) soldiers."
deep sixThe noun and verb "deep six" means "disposal, especially by throwing overboard." A minimum water depth of six (6) fathoms (approximately 11 meters) was once considered adequate for disposal of rubbish at sea.
degreeIn angular measurement, the noun and adjective "degree" (suffix symbol: {degree symbol} ) means "one three-hundred-sixtieth (1/360) of a circle."
The suffix symbol {degree symbol} denotes an angular measurement in degrees. One degree is equal to one three-hundred-sixtieth (1/360) of a circle. The degree symbol is also used as part of the compound symbols that represent units of relative temperature, e.g., -°C and -°F.
deka-The traditional metric prefix "deka-" (compound prefix symbol: da- ) denotes a multiple of ten (10). See also "deca-."
demi-The Latin-based numeric prefix "demi-" means "one half (1/2)."
denary1. The adjective and noun "denary" means "tenth (10th) in order or importance."
2. The adjective "denary" means "having ten (10) parts."
deuceThe noun "deuce" means "two (2)." In parlor games, "deuce" means "a playing card, die, or domino that represents the number two or a throw of dice that totals two." In tennis, "deuce" means "a tie that requires two successive points or games to win."
di-The prefix "di-" means "two (2)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
dickerThe noun "dicker" means "ten (10)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
dicta-The prefix "dicta-" means "two hundred (200)." See also Numeric Prefixes Used In Chemistry.
digit1. The noun and adjective "digit" means "a single symbol used to represent a number." See also "numeral."
2. The noun and adjective "digit" means "the position occupied by a digit in a positional number notation system."
3. The adjective "digit" means "the total number of digits in a number."
diheptaconta-The prefix "diheptaconta-" means "seventy-two (72)."
dihexaconta-The prefix "dihexaconta-" means "sixty-two (62)."
diicosa-The prefix "diicosa-" means "twenty-two (22)."
dilia-The prefix "dilia-" means "two thousand (2000)." See also Numeric Prefixes Used In Chemistry.
dimericThe adjective "dimeric" means "composed of two (2) parts or divisions."
dimerousThe adjective "dimerous" means "consisting of two (2) parts or segments."
dimeterThe noun "dimeter" means "a verse consisting of either two (2) metrical feet or two (2) dipodies."
dinonaconta-The prefix "dinonaconta-" means "ninety-two (92)."
dioctaconta-The prefix "dioctaconta-" means "eighty-two (82)."
dipentaconta-The Gprefix "dipentaconta-" means "fifty-two (52)."
dipodyThe noun "dipody" means "a prosodic unit consisting of two (2) feet."
ditetraconta-The prefix "ditetraconta-" means "forty-two (42)."
ditriaconta-The prefix "ditriaconta-" means "thirty-two (32)."
dodeca-The prefix "dodeca-" means "twelve (12)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
dodecadThe noun and adjective "dodecad" means "a group of twelve (12) members." See also Prefixes & Words Based On Greek Number Names.
dodecagonThe noun and adjective "dodecagon" means "a plain figure with twelve (12) straight sides." See also Prefixes & Words Based On Greek Number Names.
dodecagram1. The noun and adjective "dodecagram" means "an interconnected star figure with twelve (12) points formed by stellating a dodecagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "dodecagram" means "a word or character sequence consisting of twelve (12) characters."
dodecahedronThe noun and adjective "dodecahedron" means "a solid figure with twelve (12) planar faces." See also Prefixes & Words Based On Greek Number Names.
dodecillionThe noun and adjective "dodecillion" is an alternate form of "duodecillion." See also Prefixes & Words Based On Greek Number Names.
dodrancentennial1. The adjective and noun "dodrancentennial" means "recurring every seventy-five (75) years."
2. The adjective and noun "dodrancentennial" means "lasting seventy-five (75) years."
3. The noun and adjective "dodrancentennial" means "a seventy-five (75) year anniversary."
dodranmillenary1. The noun and adjective "dodranmillenary" means "a group of seven hundred fifty (750)."
2. The noun and adjective "dodranmillenary" means "a period of seven hundred fifty (750) years."
3. The noun and adjective "dodranmillenary" means "a seven hundred fifty (750) year anniversary."
4. The adjective and noun "dodranmillenary" means "seven hundred fiftieth (750th) in rank or order."
dodranmillennial1. The adjective and noun "dodranmillennial" means "recurring every seven hundred fifty (750) years."
2. The adjective and noun "dodranmillennial" means "lasting seven hundred fifty (750) years."
3. The noun and adjective "dodranmillennial" means "a seven hundred fifty (750) year anniversary."
dodranmillenniumThe noun and adjective "dodranmillennium" means "a period of seven hundred fifty (750) years."
doheptaconta-The prefix "doheptaconta-" means "seventy-two (72)." See also Numeric Prefixes Used In Chemistry.
dohexaconta-The prefix "dohexaconta-" means "sixty-two (62)." See also Numeric Prefixes Used In Chemistry.
doicosa-The prefix "doicosa-" means "twenty-two (22)." See also Numeric Prefixes Used In Chemistry.
dononaconta-The prefix "dononaconta-" means "ninety-two (92)." See also Numeric Prefixes Used In Chemistry.
dononagintillionThe noun and adjective "dononagintillion" is an alternate form of "duononagintillion."
dooctaconta-The prefix "dooctaconta-" means "eighty-two (82)." See also Numeric Prefixes Used In Chemistry.
dooctogintillionThe noun and adjective "dooctogintillion" is an alternate form of "duooctogintillion."
dopentaconta-The prefix "dopentaconta-" means "fifty-two (52)." See also Numeric Prefixes Used In Chemistry.
doquadragintillionThe noun and adjective "doquadragintillion" is an alternate form of "duoquadragintillion."
doquinquagintillionThe noun and adjective "doquinquagintillion" is an alternate form of "duoquinquagintillion."
doseptuagintillionThe noun and adjective "doseptuagintillion" is an alternate form of "duoseptuagintillion."
dosexagintillionThe noun and adjective "dosexagintillion" is an alternate form of "duosexagintillion."
dotetraconta-The prefix "dotetraconta-" means "forty-two (42)." See also Numeric Prefixes Used In Chemistry.
dotriaconta-The prefix "dotriaconta-" means "thirty-two (32)." See also Numeric Prefixes Used In Chemistry.
dotrigintillionThe noun and adjective "dotrigintillion" is an alternate form of "duotrigintillion."
doubleThe verb, adjective, adverb, and noun "double" means "multiply by two (2)."
double agentThe compound noun "double agent" means "a person who serves as an agent of one government while pretending to be the agent of another, often adversarial, government." See also "duplicitous."
double crossThe compound verb and noun "double cross" means "to betray an ally or friend." See also "duplicitous."
-″1. The suffix symbol -″ {double prime} denotes a linear measurement in inches. One inch is equal to 0.025 400 meter.
2. The suffix symbol -″ {double prime} denotes an angular measurement in seconds. One second is equal to one three-thousand-six-hundredth (1/3,600) of a degree (suffix symbol: {degree symbol} ) or one one-million-two-hundred-ninety-six-thousandth (1/1,296,000) of a circle.
double-entendreThe compound noun "double-entendre" means "a word or phrase having two (2) or more meanings, especially when a meaning is risqué."
doublenessThe noun "doubleness" means "the state of being two (2)."
dovigintillionThe noun and adjective "dovigintillion" is an alternate spelling of "duovigintillion."
dozenThe noun and adjective "dozen" means "twelve (12)."
dualThe adjective "dual" means "having two (2) aspects or components."
dual axleThe compound noun and adjective "dual axle" means "a truck axle with two (2) wheels mounted on both (2) sides for a total of four (4) wheels."
dual tandemThe compound noun and adjective "dual tandem" means "a pair (2) of dual truck axles mounted in tandem for a total of eight (8) wheels." See also "tandem dual."
dualityThe noun "duality" means "the state of having two (2) aspects."
duetThe noun "duet" means "a group of two (2) members."
duodecennaryThe noun and adjective "duodecennary" means "a group of twelve (12) or a period of twelve (12) years."
duodecennial1. The adjective and noun "duodecennial" means "recurring every twelve (12) years."
2. The adjective and noun "duodecennial" means "lasting twelve (12) years."
3. The noun and adjective "duodecennial" means "a twelve (12) year anniversary."
duodecenniumThe noun and adjective "duodecennium" means "a period of twelve (12) years."
duodecentenary1. The noun and adjective "duodecentenary" means "a group of one thousand two hundred (1200)."
2. The noun and adjective "duodecentenary" means "a period of one thousand two hundred (1200) years."
3. The noun and adjective "duodecentenary" means "a one thousand two hundred (1200) year anniversary."
4. The adjective and noun "duodecentenary" means "one thousand two hundredth (1200th) in rank or order."
duodecentennial1. The adjective and noun "duodecentennial" means "recurring every one thousand two hundred (1200) years."
2. The adjective and noun "duodecentennial" means "lasting one thousand two hundred (1200) years."
3. The noun and adjective "duodecentennial" means "a one thousand two hundred (1200) year anniversary."
duodecentenniumThe noun and adjective "duodecentennium" means "a period of one thousand two hundred (1200) years."
duodeci-The numeric prefix "duodeci-" means "twelve (12)." This prefix is derived from the Latin cardinal number "duodecim (XII)."
duodecillionThe noun and adjective "duodecillion" means multiplied by 1039 in the American number naming system, but means multiplied by 1072 in the Chuquet number naming system. See also Large Numbers.
duodecimalThe adjective "duodecimal" means "based on the number twelve (12)." See also "base twelve" and Base Number Notation.
duodecimoThe noun "duodecimo (12mo)" means "a book with leaves printed on one twelfth (1/12) of the printer sheet." See also "twelvemo."
duodecupleThe verb, adjective, adverb, and noun "duodecuple" means "multiply by twelve (12)."
duodenary1. The adjective and noun "duodenary" means "twelfth (12th) in order or importance."
2. The adjective "duodenary" means "having twelve (12) parts."
duononaginta-The numeric prefix "duononaginta-" means "ninety-two (92)." This prefix is derived from the Latin cardinal number "duo et nonaginta (LXXXXII)."
duononagintennaryThe noun and adjective "duononagintennary" means "a group of ninety-two (92) or a period of ninety-two (92) years."
duononagintennial1. The adjective and noun "duononagintennial" means "recurring every ninety-two (92) years."
2. The adjective and noun "duononagintennial" means "lasting ninety-two (92) years."
3. The noun and adjective "duononagintennial" means "a ninety-two (92) year anniversary."
duononagintenniumThe noun and adjective "duononagintennium" means "a period of ninety-two (92) years."
duononagintillionThe noun and adjective "duononagintillion" means multiplied by 10279 in the American number naming system, but means multiplied by 10552 in the Chuquet number naming system. See also Large Numbers.
duooctoginta-The numeric prefix "duooctoginta-" means "eighty-two (82)." This prefix is derived from the Latin cardinal number "duo et octoginta (LXXXII)."
duooctogintennaryThe noun and adjective "duooctogintennary" means "a group of eighty-two (82) or a period of eighty-two (82) years."
duooctogintennial1. The adjective and noun "duooctogintennial" means "recurring every eighty-two (82) years."
2. The adjective and noun "duooctogintennial" means "lasting eighty-two (82) years."
3. The noun and adjective "duooctogintennial" means "an eighty-two (82) year anniversary."
duooctogintenniumThe noun and adjective "duooctogintennium" means "a period of eighty-two (82) years."
duooctogintillionThe noun and adjective "duooctogintillion" means multiplied by 10249 in the American number naming system, but means multiplied by 10492 in the Chuquet number naming system. See also Large Numbers.
duoquadraginta-The numeric prefix "duoquadraginta-" means "forty-two (42)." This prefix is derived from the Latin cardinal number "duo et quadraginta (XXXXII)."
duoquadragintennaryThe noun and adjective "duoquadragintennary" means "a group of forty-two (42) or a period of forty-two (42) years."
duoquadragintennial1. The adjective and noun "duoquadragintennial" means "recurring every forty-two (42) years."
2. The adjective and noun "duoquadragintennial" means "lasting forty-two (42) years."
3. The noun and adjective "duoquadragintennial" means "a forty-two (42) year anniversary."
duoquadragintenniumThe noun and adjective "duoquadragintennium" means "a period of forty-two (42) years."
duoquadragintillionThe noun and adjective "duoquadragintillion" means multiplied by 10129 in the American number naming system, but means multiplied by 10252 in the Chuquet number naming system. See also Large Numbers.
duoquinquaginta-The numeric prefix "duoquinquaginta-" means "fifty-two (52)." This prefix is derived from the Latin cardinal number "duo et quinquaginta (LII)."
duoquinquagintennaryThe noun and adjective "duoquinquagintennary" means "a group of fifty-two (52) or a period of fifty-two (52) years."
duoquinquagintennial1. The adjective and noun "duoquinquagintennial" means "recurring every fifty-two (52) years."
2. The adjective and noun "duoquinquagintennial" means "lasting fifty-two (52) years."
3. The noun and adjective "duoquinquagintennial" means "a fifty-two (52) year anniversary."
duoquinquagintenniumThe noun and adjective "duoquinquagintennium" means "a period of fifty-two (52) years."
duoquinquagintillionThe noun and adjective "duoquinquagintillion" means multiplied by 10159 in the American number naming system, but means multiplied by 10312 in the Chuquet number naming system. See also Large Numbers.
duoseptuaginta-The numeric prefix "duoseptuaginta-" means "seventy-two (72)." This prefix is derived from the Latin cardinal number "duo et septuaginta (LXXII)."
duoseptuagintennaryThe noun and adjective "duoseptuagintennary" means "a group of seventy-two (72) or a period of seventy-two (72) years."
duoseptuagintennial1. The adjective and noun "duoseptuagintennial" means "recurring every seventy-two (72) years."
2. The adjective and noun "duoseptuagintennial" means "lasting seventy-two (72) years."
3. The noun and adjective "duoseptuagintennial" means "a seventy-two (72) year anniversary."
duoseptuagintenniumThe noun and adjective "duoseptuagintennium" means "a period of seventy-two (72) years."
duoseptuagintillionThe noun and adjective "duoseptuagintillion" means multiplied by 10219 in the American number naming system, but means multiplied by 10432 in the Chuquet number naming system. See also Large Numbers.
duosexaginta-The numeric prefix "duosexaginta-" means "sixty-two (62)." This prefix is derived from the Latin cardinal number "duo et sexaginta (LXII)."
duosexagintennaryThe noun and adjective "duosexagintennary" means "a group of sixty-two (62) or a period of sixty-two (62) years."
duosexagintennial1. The adjective and noun "duosexagintennial" means "recurring every sixty-two (62) years."
2. The adjective and noun "duosexagintennial" means "lasting sixty-two (62) years."
3. The noun and adjective "duosexagintennial" means "a sixty-two (62) year anniversary."
duosexagintenniumThe noun and adjective "duosexagintennium" means "a period of sixty-two (62) years."
duosexagintillionThe noun and adjective "duosexagintillion" means multiplied by 10189 in the American number naming system, but means multiplied by 10372 in the Chuquet number naming system. See also Large Numbers.
duotrigesimalThe adjective "duotrigesimal" means "based on the number thirty-two (32)." See also Base Number Notation.
duotriginta-The numeric prefix "duotriginta-" means "thirty-two (32)." This prefix is derived from the Latin cardinal number "duo et triginta (XXXII)."
duotrigintacentenary1. The noun and adjective "duotrigintacentenary" means "a group of three thousand two hundred (3200)."
2. The noun and adjective "duotrigintacentenary" means "a period of three thousand two hundred (3200) years."
3. The noun and adjective "duotrigintacentenary" means "a three thousand two hundred (3200) year anniversary."
4. The adjective and noun "duotrigintacentenary" means "three thousand two hundredth (3200th) in rank or order."
duotrigintacentennial1. The adjective and noun "duotrigintacentennial" means "recurring every three thousand two hundred (3200) years."
2. The adjective and noun "duotrigintacentennial" means "lasting three thousand two hundred (3200) years."
3. The noun and adjective "duotrigintacentennial" means "a three thousand two hundred (3200) year anniversary."
duotrigintacentenniumThe noun and adjective "duotrigintacentennium" means "a period of three thousand two hundred (3200) years."
duotrigintennaryThe noun and adjective "duotrigintennary" means "a group of thirty-two (32) or a period of thirty-two (32) years."
duotrigintennial1. The adjective and noun "duotrigintennial" means "recurring every thirty-two (32) years."
2. The adjective and noun "duotrigintennial" means "lasting thirty-two (32) years."
3. The noun and adjective "duotrigintennial" means "a thirty-two (32) year anniversary."
duotrigintenniumThe noun and adjective "duotrigintennium" means "a period of thirty-two (32) years."
duotrigintillionThe noun and adjective "duotrigintillion" means multiplied by 1099 in the American number naming system, but means multiplied by 10192 in the Chuquet number naming system. See also Large Numbers.
duovigintennaryThe noun and adjective "duovigintennary" means "a group of twenty-two (22) or a period of twenty-two (22) years."
duovigintennial1. The adjective and noun "duovigintennial" means "recurring every twenty-two (22) years."
2. The adjective and noun "duovigintennial" means "lasting twenty-two (22) years."
3. The noun and adjective "duovigintennial" means "a twenty-two (22) year anniversary."
duovigintenniumThe noun and adjective "duovigintennium" means "a period of twenty-two (22) years."
duoviginti-The numeric prefix "duoviginti-" means "twenty-two (22)." This prefix is derived from the Latin cardinal number "duo et viginti (XXII)."
duoviginticentenary1. The noun and adjective "duoviginticentenary" means "a group of two thousand two hundred (2200)."
2. The noun and adjective "duoviginticentenary" means "a period of two thousand two hundred (2200) years."
3. The noun and adjective "duoviginticentenary" means "a two thousand two hundred (2200) year anniversary."
4. The adjective and noun "duoviginticentenary" means "two thousand two hundredth (2200th) in rank or order."
duoviginticentennial1. The adjective and noun "duoviginticentennial" means "recurring every two thousand two hundred (2200) years."
2. The adjective and noun "duoviginticentennial" means "lasting two thousand two hundred (2200) years."
3. The noun and adjective "duoviginticentennial" means "a two thousand two hundred (2200) year anniversary."
duoviginticentenniumThe noun and adjective "duoviginticentennium" means "a period of two thousand two hundred (2200) years."
duovigintillionThe noun and adjective "duovigintillion" means multiplied by 1069 in the American number naming system, but means multiplied by 10132 in the Chuquet number naming system. See also Large Numbers.
dupleThe adjective and noun "duple" means "multiplied by two (2)."
duplexThe noun and adjective "duplex" means "having two (2) parts."
duplicate1. The noun and adjective "duplicate" means "either of two (2) things exactly alike."
2. The adjective "duplicate" means "consisting of two (2) identical or corresponding parts or examples."
3. The noun and adjective "duplicate" means "a second (2nd or 2d) instance or copy of something."
4. The verb "duplicate" means "to make double (2)."
5. The verb "duplicate" means "to create a second (2nd or 2d) instance or copy of an object."
Usage: "Duplicate" is often used generically to mean "reproduce", "replicate", or "copy", but properly "duplicate" means the production of only a single (1) copy.
6. The verb "duplicate" means "to create something equal to the original (1st) instance."
7. The verb "duplicate" means "to do something a second (2nd or 2d) time."
duplicitousThe adjective and adverb "duplicitous" means "having a contradictory doubleness, especially belying true intentions by deception."
duplicityThe noun "duplicity" means "the state of being two (2) at once." Most commonly, "duplicity" means "a contradictory doubleness, especially belying true intentions by deception."
duumvirThe noun "duumvir" means "one (1) of two (2) ruling men." (In Latin, "duumvir" specifically refers to an adult male.) The plural of "duumvir" is "duumviri."
duumvirateThe noun and adjective "duumvirate" means "a ruling body of two (2) men."
dyadThe noun and adjective "dyad" means "a group of two (2) members." See also Prefixes & Words Based On Greek Number Names.
dyagramThe noun and adjective "dyagram" means "a word or character pair consisting of two (2) characters."
eThe Latin lower case letter "e" represents "Napier's Constant," the base of the natural, hyperbolic, or Naperian logarithms. "Napier's Constant" is a transcendental number approximately 2.718 281 828 459. See also The Natural Logarithmic Base and e. See also Prefixes & Words Based On Greek Number Names.
E-The metric prefix symbol E- (metric prefix: "exa-" ) denotes a multiple of ten to the eighteenth power (1018 = 1E+18 = 1,000,000,000,000,000,000) as defined by Le Système International d'Unités (SI).
eachThe singular pronoun and adjective "each" means "every single individual of a group."
Ei-The compound binary prefix symbol Ei- (binary prefix: "exbi-" ) denotes a multiple of two to the sixtieth power (260 = 1,152,921,504,606,846,976) as defined by the International Electrotechnical Commission (IEC). See also "exabinary."
eightThe noun, pronoun, and adjective "eight (8)" is the standard name for "the cardinal number that follows seven (7)." "Eight" equals "two to the third power (23)." "Eight" corresponds with the ordinal number "eighth (8th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighteenThe <>noun, pronoun, and adjective </>"eighteen (18)" is the standard name for "the cardinal number that follows seventeen (17)." "Eighteen" corresponds with the ordinal number "eighteenth (18th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighteenth1. The adjective, adverb, and noun "eighteenth (18th)" is the standard name for "the ordinal number that follows seventeenth (17th)." "Eighteenth" corresponds with the cardinal number "eighteen (18)." See also Number Names.
2. The adjective and noun "eighteenth (1/18)" means "divided by eighteen (18)."
eighteen-wheelerThe compound noun "eighteen-wheeler (18-wheeler)" means "a tractor and trailer combination freight truck with eighteen (18) wheels." Most commonly, a tractor and trailer rig consists of a tractor with two (2) wheels for steering and tandem dual drive axles and a trailer with tandem dual trailing axles mounted near the rear. See also "octodecicycle" and "semi."
eighthThe adjective, adverb, and noun "eighth (8th)" is the standard name for "the ordinal number that follows seventh (7th)." "Eighth" corresponds with the cardinal number "eight (8)." See also Number Names.
2. The adjective and noun "eighth (1/8)" means "divided by eight (8)."
eighties1. The plural noun and adjective "eighties (80s)" means "an integer multiple of eighty (80)."
2. The plural noun and adjective "eighties (80's)" means "the range of numbers at least eighty (80) but less than ninety (90)." When referring to dates, "eighties" means "a span of ten years in which the tens (10s) digit of the year number is eight (8)."
eightieth1. The adjective, adverb, and noun "eightieth (80th)" is the standard name for "the ordinal number that follows seventy-ninth (79th)." "Eightieth" corresponds with the cardinal number "eighty (80)." See also Number Names.
2. The adjective and noun "eightieth (1/80)" means "divided by eighty (80)."
eightyThe noun, pronoun, and adjective "eighty (80)" is the standard name for "the cardinal number that follows seventy-nine (79)." "Eighty" corresponds with the ordinal number "eightieth (80th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-eightThe noun and adjective "eighty-eight (88)" is the standard name for "the cardinal number that follows eighty-seven (87)." "Eighty-eight" corresponds with the ordinal number "eighty-eighth (88th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-eighthThe compound adjective, adverb, and noun "eighty-eighth (88th)" is the standard name for "the ordinal number that follows eighty-seventh (87th)." "Eighty-eighth" corresponds with the cardinal number "eighty-eight (88)." See also Number Names.
eighty-fifthThe compound adjective, adverb, and noun "eighty-fifth (85th)" is the standard name for "the ordinal number that follows eighty-fourth (84th)." "Eighty-fifth" corresponds with the cardinal number "eighty-five (85)." See also Number Names.
eighty-firstThe compound adjective, adverb, and noun "eighty-first (81st)" is the standard name for "the ordinal number that follows eightieth (80th)." "Eighty-first" corresponds with the cardinal number "eighty-one (81)." See also Number Names.
eighty-fiveThe noun and adjective "eighty-five (85)" is the standard name for "the cardinal number that follows eighty-four (84)." "Eighty-five" corresponds with the ordinal number "eighty-fifth (85th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-fourThe noun and adjective "eighty-four (84)" is the standard name for "the cardinal number that follows eighty-three (83)." "Eighty-four" corresponds with the ordinal number "eighty-fourth (84th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-fourthThe compound adjective, adverb, and noun "eighty-fourth (84th)" is the standard name for "the ordinal number that follows eighty-third (83rd or 83d)." "Eighty-fourth" corresponds with the cardinal number "eighty-four (84)." See also Number Names.
eighty-nineThe noun and adjective "eighty-nine (89)" is the standard name for "the cardinal number that follows eighty-eight (88)." "Eighty-nine" corresponds with the ordinal number "eighty-ninth (89th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-ninthThe compound adjective, adverb, and noun "eighty-ninth (89th)" is the standard name for "the ordinal number that follows eighty-eighth (88th)." "Eighty-ninth" corresponds with the cardinal number "eighty-nine (89)." See also Number Names.
eighty-oneThe noun and adjective "eighty-one (81)" is the standard name for "the cardinal number that follows eighty (80)." "Eighty-one" corresponds with the ordinal number "eighty-first (81st)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-secondThe compound adjective, adverb, and noun "eighty-second (82nd or 82d)" is the standard name for "the ordinal number that follows eighty-first (81st)." "Eighty-second" corresponds with the cardinal number "eighty-two (82)." See also Number Names.
eighty-sevenThe noun and adjective "eighty-seven (87)" is the standard name for "the cardinal number that follows eighty-six (86)." "Eighty-seven" corresponds with the ordinal number "eighty-seventh (87th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-seventhThe compound adjective, adverb, and noun "eighty-seventh (87th)" is the standard name for "the ordinal number that follows eighty-sixth (86th)." "Eighty-seventh" corresponds with the cardinal number "eighty-seven (87)." See also Number Names.
eighty-sixThe noun and adjective "eighty-six (86)" is the standard name for "the cardinal number that follows eighty-five (85)." "Eighty-six" corresponds with the ordinal number "eighty-sixth (86th)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-sixthThe compound adjective, adverb, and noun "eighty-sixth (86th)" is the standard name for "the ordinal number that follows eighty-fifth (85th)." "Eighty-sixth" corresponds with the cardinal number "eighty-six (86)." See also Number Names.
eighty-thirdThe compound adjective, adverb, and noun "eighty-third (83rd or 83d)" is the standard name for "the ordinal number that follows eighty-second (82nd or 82d)." "Eighty-third" corresponds with the cardinal number "eighty-three (83)." See also Number Names.
eighty-threeThe noun and adjective "eighty-three (83)" is the standard name for "the cardinal number that follows eighty-two (82)." "Eighty-three" corresponds with the ordinal number "eighty-third (83rd or 83d)." See also Number Names, Number Notation Systems, and Integer Factors.
eighty-twoThe noun and adjective "eighty-two (82)" is the standard name for "the cardinal number that follows eighty-one (81)." "Eighty-two" corresponds with the ordinal number "eighty-second (82nd or 82d)." See also Number Names, Number Notation Systems, and Integer Factors.
elevenThe noun, pronoun, and adjective "eleven (11)" is the standard name for "the cardinal number that follows ten (10)." "Eleven" corresponds with the ordinal number "eleventh (11th)." See also Number Names, Number Notation Systems, and Integer Factors.
eleventh1. The adjective, adverb, and noun "eleventh (11th)" is the standard name for "the ordinal number that follows tenth (10th)." "Eleventh" corresponds with the cardinal number "eleven (11)." See also Number Names.
2. The compound adjective and noun "eleventh (1/11)" means "divided by eleven (11)."
ennea-The prefix "ennea-" means "nine (9)." See also Prefixes & Words Based On Greek Number Names.
enneaconta-The prefix "enneaconta-" means "ninety (90)." See also Prefixes & Words Based On Greek Number Names.
enneacontadThe noun and adjective "enneacontad" means "a group of ninety (90) members." See also Prefixes & Words Based On Greek Number Names.
enneacontadi-The prefix "enneacontadi-" means "ninety-two (92)." "Enneacontadi-" is an alternate form of the prefix "enneacontakaidi-." See also Prefixes & Words Based On Greek Number Names.
enneacontaennea-The prefix "enneacontaennea-" means "ninety-nine (99)." "Enneacontaennea-" is an alternate form of the prefix "enneacontakaiennea-."
enneacontagonThe noun and adjective "enneacontagon" means "a plain figure with ninety (90) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontagram1. The noun and adjective "enneacontagram" means "an interconnected star figure with ninety (90) points formed by stellating a enneacontagon." See also Prefixes & Words Based On Greek Number Names.
enneacontahedronThe noun and adjective "enneacontahedron" means "a solid figure with ninety (90) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontahena-The prefix "enneacontahena-" means "ninety-one (91)." "Enneacontahena-" is an alternate form of the prefix "enneacontakaihena-." See also Prefixes & Words Based On Greek Number Names.
enneacontahepta-The prefix "enneacontahepta-" means "ninety-seven (97)." "Enneacontahepta-" is an alternate form of the prefix "enneacontakaihepta-."
enneacontahexa-The prefix "enneacontahexa-" means "ninety-six (96)." "Enneacontahexa-" is an alternate form of the prefix "enneacontakaihexa-."
enneacontakaidi-The prefix "enneacontakaidi-" means "ninety-two (92)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaidigonThe noun and adjective "enneacontakaidigon" means "a plain figure with ninety-two (92) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaidigramThe noun and adjective "enneacontakaidigram" means "an interconnected star figure with ninety-two (92) points formed by stellating a enneacontakaidigon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaidihedronThe noun and adjective "enneacontakaidihedron" means "a solid figure with ninety-two (92) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaidyadThe noun and adjective "enneacontakaidyad" means "a group of ninety-two (92) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaiennea-The prefix "enneacontakaiennea-" means "ninety-nine (99)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaienneadThe noun and adjective "enneacontakaiennead" means "a group of ninety-nine (99) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaienneagonThe noun and adjective "enneacontakaienneagon" means "a plain figure with ninety-nine (99) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaienneagramThe noun and adjective "enneacontakaienneagram" means "an interconnected star figure with ninety-nine (99) points formed by stellating a enneacontakaienneagon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaienneahedronThe noun and adjective "enneacontakaienneahedron" means "a solid figure with ninety-nine (99) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihena-The prefix "enneacontakaihena-" means "ninety-one (91)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihenadThe noun and adjective "enneacontakaihenad" means "a group of ninety-one (91) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihenagonThe noun and adjective "enneacontakaihenagon" means "a plain figure with ninety-one (91) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihenagramThe noun and adjective "enneacontakaihenagram" means "an interconnected star figure with ninety-one (91) points formed by stellating a enneacontakaihenagon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihenahedronThe noun and adjective "enneacontakaihenahedron" means "a solid figure with ninety-one (91) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihepta-The prefix "enneacontakaihepta-" means "ninety-seven (97)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaiheptadThe noun and adjective "enneacontakaiheptad" means "a group of ninety-seven (97) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaiheptagonThe noun and adjective "enneacontakaiheptagon" means "a plain figure with ninety-seven (97) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaiheptagramThe noun and adjective "enneacontakaiheptagram" means "an interconnected star figure with ninety-seven (97) points formed by stellating a enneacontakaiheptagon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaiheptahedronThe noun and adjective "enneacontakaiheptahedron" means "a solid figure with ninety-seven (97) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihexa-The prefix "enneacontakaihexa-" means "ninety-six (96)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihexadThe noun and adjective "enneacontakaihexad" means "a group of ninety-six (96) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihexagonThe noun and adjective "enneacontakaihexagon" means "a plain figure with ninety-six (96) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihexagramThe noun and adjective "enneacontakaihexagram" means "an interconnected star figure with ninety-six (96) points formed by stellating a enneacontakaihexagon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaihexahedronThe noun and adjective "enneacontakaihexahedron" means "a solid figure with ninety-six (96) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaiocta-The prefix "enneacontakaiocta-" means "ninety-eight (98)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaioctadThe noun and adjective "enneacontakaioctad" means "a group of ninety-eight (98) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaioctagonThe noun and adjective "enneacontakaioctagon" means "a plain figure with ninety-eight (98) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaioctagramThe noun and adjective "enneacontakaioctagram" means "an interconnected star figure with ninety-eight (98) points formed by stellating a enneacontakaioctagon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaioctahedronThe noun and adjective "enneacontakaioctahedron" means "a solid figure with ninety-eight (98) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaipenta-The prefix "enneacontakaipenta-" means "ninety-five (95)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaipentadThe noun and adjective "enneacontakaipentad" means "a group of ninety-five (95) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaipentagonThe noun and adjective "enneacontakaipentagon" means "a plain figure with ninety-five (95) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaipentagramThe noun and adjective "enneacontakaipentagram" means "an interconnected star figure with ninety-five (95) points formed by stellating a enneacontakaipentagon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaipentahedronThe noun and adjective "enneacontakaipentahedron" means "a solid figure with ninety-five (95) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitetra-The prefix "enneacontakaitetra-" means "ninety-four (94)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitetradThe noun and adjective "enneacontakaitetrad" means "a group of ninety-four (94) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitetragonThe noun and adjective "enneacontakaitetragon" means "a plain figure with ninety-four (94) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitetragramThe noun and adjective "enneacontakaitetragram" means "an interconnected star figure with ninety-four (94) points formed by stellating a enneacontakaitetragon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitetrahedronThe noun and adjective "enneacontakaitetrahedron" means "a solid figure with ninety-four (94) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitri-The prefix "enneacontakaitri-" means "ninety-three (93)." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitriadThe noun and adjective "enneacontakaitriad" means "a group of ninety-three (93) members." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitrigonThe noun and adjective "enneacontakaitrigon" means "a plain figure with ninety-three (93) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitrigramThe noun and adjective "enneacontakaitrigram" means "an interconnected star figure with ninety-three (93) points formed by stellating a enneacontakaitrigon." See also Prefixes & Words Based On Greek Number Names.
enneacontakaitrihedronThe noun and adjective "enneacontakaitrihedron" means "a solid figure with ninety-three (93) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneacontaocta-The prefix "enneacontaocta-" means "ninety-eight (98)." "Enneacontaocta-" is an alternate form of the prefix "enneacontakaiocta-." See also Prefixes & Words Based On Greek Number Names.
enneacontapenta-The prefix "enneacontapenta-" means "ninety-five (95)." "Enneacontapenta-" is an alternate form of the prefix "enneacontakaipenta-."
enneacontatetra-The prefix "enneacontatetra-" means "ninety-four (94)." "Enneacontatetra-" is an alternate form of the prefix "enneacontakaitetra-."
enneacontatri-The prefix "enneacontatri-" means "ninety-three (93)." "Enneacontatri-" is an alternate form of the prefix "enneacontakaitri-."
enneadThe noun and adjective "ennead" means "a group of nine (9) members." See also Prefixes & Words Based On Greek Number Names.
enneadeca-The prefix "enneadeca-" means "nineteen (19)." "Enneadeca-" is an alternate form of the prefix "enneakaideca-." See also Prefixes & Words Based On Greek Number Names.
enneagonThe noun and adjective "enneagon" means "a plain figure with nine (9) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneagram1. The noun and adjective "enneagram" means "an interconnected star figure with nine (9) points formed by stellating a enneagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "enneagram" means "a word or character sequence consisting of nine (9) characters."
enneahedronThe noun and adjective "enneahedron" means "a solid figure with nine (9) planar faces." See also Prefixes & Words Based On Greek Number Names.
enneakaideca-The prefix "enneakaideca-" means "nineteen (19)." See also Prefixes & Words Based On Greek Number Names.
enneakaidecadThe noun and adjective "enneakaidecad" means "a group of nineteen (19) members." See also Prefixes & Words Based On Greek Number Names.
enneakaidecagonThe noun and adjective "enneakaidecagon" means "a plain figure with nineteen (19) straight sides." See also Prefixes & Words Based On Greek Number Names.
enneakaidecagramThe noun and adjective "enneakaidecagram" means "an interconnected star figure with nineteen (19) points formed by stellating a enneakaidecagon." See also Prefixes & Words Based On Greek Number Names.
enneakaidecahedronThe noun and adjective "enneakaidecahedron" means "a solid figure with nineteen (19) planar faces." See also Prefixes & Words Based On Greek Number Names.
enumerateThe verb "enumerate" means "to assign a number to an object." Most commonly "enumerate" means "to count." See also "number." See also Prefixes & Words Based On Greek Number Names.
ephemeralThe adjective and noun "ephemeral" means "lasting only one (1) day." More generally, "ephemeral" means "lasting a comparatively short time."
Euler-Mascheroni ConstantThe "Euler-Mascheroni Constant," also known as "Euler's Constant," (symbol: γ {Greek lower case letter gamma} ) is approximately 0.577 215 664 902. Swiss mathematician Leonhard Euler (1707-1783) discovered γ in 1734. Italian priest and mathematician Lorenzo Mascheroni made the first precise calculation of γ in 1790. See also "Euler-Mascheroni Constant, γ."
Euler's Constant"Euler's Constant," also known as the "Euler-Mascheroni Constant," (symbol: γ {Greek lower case letter gamma} ) is approximately 0.577 215 664 902. Swiss mathematician Leonhard Euler (1707-1783) discovered γ in 1734. Italian priest and mathematician Lorenzo Mascheroni made the first precise calculation of γ in 1790. See also "Euler-Mascheroni Constant, γ."
everyThe adjective "every" means "each member of a group without exception."
exa-The metric prefix "exa-" (prefix symbol: E- ) denotes a multiple of ten to the eighteenth power (1018 = 1E+18 = 1,000,000,000,000,000,000) as defined by Le Système International d'Unités (SI).
exabinaryThe adjective "exabinary" means "two to the sixtieth power (260 = 1,152,921,504,606,846,976)." See also binary prefix "exbi-" and compound binary prefix symbol "Ei-."
exbi-The binary prefix "exbi-" (prefix symbol: Ei- ) denotes a multiple of two to the sixtieth power (260 = 1,152,921,504,606,846,976) as defined by the International Electrotechnical Commission (IEC). See also "exabinary."
exbinThe adjective and noun "exbin" means "two to the sixtieth power (260 = 1,152,921,504,606,846,976)." See also "exabinary" and "exbi-."
FThe Latin letter "F" is a symbol for the logical value "FALSE".
f-The metric prefix symbol f- (metric prefix: "femto-" ) denotes a multiple of ten to the negative fifteenth power (10-15 = 1E-15 = 0.000 000 000 000 001) as defined by Le Système International d'Unités (SI).
FALSEThe adjective, adverb, and noun "FALSE" is a logical value. "FALSE" and "TRUE" are often used as a binary logic pair.
femto-The metric prefix "femto-" (prefix symbol: f- ) denotes a multiple of ten to the negative fifteenth power (10-15 = 1E-15 = 0.000 000 000 000 001) as defined by Le Système International d'Unités (SI).
fewThe noun and positive adjective "few" means "a relatively small number of individuals or discrete objects."
Usage: The adjectives "few/fewer/fewest" are used with count nouns and collection nouns (integers), while the adjectives "little/less/least" are used with mass nouns (non-discrete quantities).
Example: "I know my automobile uses less fuel because I make fewer stops to refill."
fewerThe comparative adjective "fewer" means "a smaller number of individuals or discrete objects." See usage note at "few."
fewestThe superlative adjective "fewest" means "the smallest number of individuals or discrete objects." See usage note at "few."
fifteenThe noun, pronoun, and adjective "fifteen (15)" is the standard name for "the cardinal number that follows fourteen (14)." "Fifteen" corresponds with the ordinal number "fifteenth (15th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifteenth1. The adjective, adverb, and noun "fifteenth (15th)" is the standard name for "the ordinal number that follows fourteenth (14th)." "Fifteenth" corresponds with the cardinal number "fifteen (15)." See also Number Names.
2. The adjective and noun "fifteenth (1/15)" means "divided by fifteen (15)."
fifth1. The adjective, adverb, and noun "fifth (5th)" is the standard name for "the ordinal number that follows fourth (4th)." "Fifth" corresponds with the cardinal number "five (5)." See also Number Names.
2. The adjective and noun "fifth (1/5)" means "divided by five (5)."
3. In liquid measurement, the noun and adjective "fifth" means "one fifth (1/5) of a gallon."
fifth cousinThe compound noun "fifth (5th) cousin" means "an individual sharing a common pair of great-great-great-great-grandparents with the referenced individual."
fifth elementThe compound noun "fifth (5th) element" means "the fifth (5th) and most important element of the universe." See also "quintessence."
fifth essenceThe compound noun "fifth (5th) essence" means "the fifth (5th) and highest essence of an object or being." See also "quintessence."
fifties1. The plural noun and adjective "fifties (50s)" means "an integer multiple of fifty (50)."
2. The plural noun and adjective "fifties (50's)" means "the range of numbers at least fifty (50) but less than sixty (60)." When referring to dates, "fifties" means "a span of ten years in which the tens (10s) digit of the year number is five (5)."
fiftieth1. The adjective, adverb, and noun "fiftieth (50th)" is the standard name for "the ordinal number that follows forty-ninth (49th)." "Fiftieth" corresponds with the cardinal number "fifty (50)." See also Number Names.
2. The adjective and noun "fiftieth (1/50)" means "divided by fifty (50)."
fiftyThe noun, pronoun, and adjective "fifty (50)" is the standard name for "the cardinal number that follows forty-nine (49)." "Fifty" corresponds with the ordinal number "fiftieth (50th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-eightThe noun and adjective "fifty-eight (58)" is the standard name for "the cardinal number that follows fifty-seven (57)." "Fifty-eight" corresponds with the ordinal number "fifty-eighth (58th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-eighthThe compound adjective, adverb, and noun "fifty-eighth (58th)" is the standard name for "the ordinal number that follows fifty-seventh (57th)." "Fifty-eighth" corresponds with the cardinal number "fifty-eight (58)." See also Number Names.
fifty-fifthThe compound adjective, adverb, and noun "fifty-fifth (55th)" is the standard name for "the ordinal number that follows fifty-fourth (54th)." "Fifty-fifth" corresponds with the cardinal number "fifty-five (55)." See also Number Names.
fifty-firstThe compound adjective, adverb, and noun "fifty-first (51st)" is the standard name for "the ordinal number that follows fiftieth (50th)." "Fifty-first" corresponds with the cardinal number "fifty-one (51)." See also Number Names.
fifty-fiveThe noun and adjective "fifty-five (55)" is the standard name for "the cardinal number that follows fifty-four (54)." "Fifty-five" corresponds with the ordinal number "fifty-fifth (55th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-fourThe noun and adjective "fifty-four (54)" is the standard name for "the cardinal number that follows fifty-three (53)." "Fifty-four" corresponds with the ordinal number "fifty-fourth (54th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-fourthThe compound adjective, adverb, and noun "fifty-fourth (54th)" is the standard name for "the ordinal number that follows fifty-third (53rd or 53d)." "Fifty-fourth" corresponds with the cardinal number "fifty-four (54)." See also Number Names.
fifty-nineThe noun and adjective "fifty-nine (59)" is the standard name for "the cardinal number that follows fifty-eight (58)." "Fifty-nine" corresponds with the ordinal number "fifty-ninth (59th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-ninthThe compound adjective, adverb, and noun "fifty-ninth (59th)" is the standard name for "the ordinal number that follows fifty-eighth (58th)." "Fifty-ninth" corresponds with the cardinal number "fifty-nine (59)." See also Number Names.
fifty-oneThe noun and adjective "fifty-one (51)" is the standard name for "the cardinal number that follows fifty (50)." "Fifty-one" corresponds with the ordinal number "fifty-first (51st)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-secondThe compound adjective, adverb, and noun "fifty-second (52nd or 52d)" is the standard name for "the ordinal number that follows fifty-first (51st)." "Fifty-second" corresponds with the cardinal number "fifty-two (52)." See also Number Names.
fifty-sevenThe noun and adjective "fifty-seven (57)" is the standard name for "the cardinal number that follows fifty-six (56)." "Fifty-seven" corresponds with the ordinal number "fifty-seventh (57th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-seventhThe compound adjective, adverb, and noun "fifty-seventh (57th)" is the standard name for "the ordinal number that follows fifty-sixth (56th)." "Fifty-seventh" corresponds with the cardinal number "fifty-seven (57)." See also Number Names.
fifty-sixThe noun and adjective "fifty-six (56)" is the standard name for "the cardinal number that follows fifty-five (55)." "Fifty-six" corresponds with the ordinal number "fifty-sixth (56th)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-sixthThe compound adjective, adverb, and noun "fifty-sixth (56th)" is the standard name for "the ordinal number that follows fifty-fifth (55th)." "Fifty-sixth" corresponds with the cardinal number "fifty-six (56)." See also Number Names.
fifty-somethingThe compound noun and adjective "fifty-something" means "at least fifty (50) but less than sixty (60)." "Fifty-something" most commonly means "between fifty (50) and sixty (60) years of age." See also "quinquagenarian."
fifty-thirdThe compound adjective, adverb, and noun "fifty-third (53rd or 53d)" is the standard name for "the ordinal number that follows fifty-second (52nd or 52d)." "Fifty-third" corresponds with the cardinal number "fifty-three (53)." See also Number Names.
fifty-threeThe noun and adjective "fifty-three (53)" is the standard name for "the cardinal number that follows fifty-two (52)." "Fifty-three" corresponds with the ordinal number "fifty-third (53rd or 53d)." See also Number Names, Number Notation Systems, and Integer Factors.
fifty-twoThe noun and adjective "fifty-two (52)" is the standard name for "the cardinal number that follows fifty-one (51)." "Fifty-two" corresponds with the ordinal number "fifty-second (52nd or 52d)." See also Number Names, Number Notation Systems, and Integer Factors.
finiteThe adjective "finite" means "a quantity that can be bound by limits." See also Finite.
firstThe adjective, adverb, and noun "first (1st)" is the standard name for "the ordinal number that precedes all other ordinal numbers." "First" corresponds with the cardinal number "one (1)." The word "first" is often used to denote "the earliest event" or "the highest class." See also Number Names.
first aidThe compound noun and adjective "first (1st) aid" means "emergency medical treatment administered to an injured or sick person before professional medical care is available."
first classThe compound noun, adjective, and adverb "first (1st) class" means "the best class."
first cousinThe compound noun "first (1st) cousin" means "an individual sharing a common pair of grandparents with the referenced individual."
first cousin once removedThe compound noun "first (1st) cousin once (1-time) removed" means "the child of a first cousin"
first cousin thrice removedThe compound noun "first (1st) cousin thrice (3-times) removed" means "the great-grandchild of a first cousin"
first cousin twice removedThe compound noun "first (1st) cousin twice (2-times) removed" means "the grandchild of a first cousin"
First NationThe compound noun and adjective "First (1st) Nation" means "an aboriginal group or community, especially those officially recognized by the Canadian government."
first personThe compound noun and adjective "first (1st) person" denotes "the speaker or writer referring to himself or herself."
first stringThe noun and adjective "first (1st) string" means "the group of players designated to start games for a sports team, usually the best player at each position."
First WorldThe compound noun and adjective "First (1st) World" means "the wealthest nations of the world, more specifically, those nations whose per capita gross domestic product (GDP) is more than twice the average per capita gross domestic product of all the Earth's population (about $15,800 USD per person per year in 2003.)" See origin note at "Third World."
firstbornThe noun and adjective "firstborn" means "the child born first in a family."
firsthandThe adjective and adverb "firsthand" means "received from the original (1st) source."
firstlingThe noun and adjective "firstling" means "the individual born or created first within a group."
first-rateThe adjective and adverb "first-rate (1st-rate)" means "the highest quality, rank, or importance."
first stringerThe noun "first-stringer" means "a player on the first string."
fiveThe noun, pronoun, and adjective "five (5)" is the standard name for "the cardinal number that follows four (4)." "Five" corresponds with the ordinal number "fifth (5th)." See also Number Names, Number Notation Systems, and Integer Factors.
five-starThe compound adjective "five-star (5-star)" means "of highest quality based upon the one (1) to five (5) star rating system often used to evaluate accomodations, restaurants, customer service, etc."
-foldThe suffix "-fold" means "multiplied by the prefix number." Thus, "twofold (2-fold)" means "doubled" and "threefold (3-fold)" means "tripled."
folioThe noun "folio" means "a book with leaves printed on one half (1/2) of the printer sheet."
forties1. The plural noun and adjective "forties (40s)" means "an integer multiple of forty (40)."
2. The plural noun and adjective "forties (40's)" means "the range of numbers at least forty (40) but less than fifty (50)." When referring to dates, "forties" means "a span of ten years in which the tens (10s) digit of the year number is four (4)."
fortiethThe adjective, adverb, and noun "fortieth (40th)" is the standard name for "the ordinal number that follows thirty-ninth (39th)." "Fortieth" corresponds with the cardinal number "forty (40)." See also Number Names.
2. The adjective and noun "fortieth (1/40)" means "divided by forty (40)."
fortnightThe noun "fortnight" means "fourteen (14) days."
fortnightlyThe adjective "fortnightly" means "recurring every fourteen (14) days."
fortyThe noun, pronoun, and adjective "forty (40)" is the standard name for "the cardinal number that follows thirty-nine (39)." "Forty" corresponds with the ordinal number "fortieth (40th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-eightThe noun and adjective "forty-eight (48)" is the standard name for "the cardinal number that follows forty-seven (47)." "Forty-eight" corresponds with the ordinal number "forty-eighth (48th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-eighth1. The compound adjective, adverb, and noun "forty-eighth (48th)" is the standard name for "the ordinal number that follows forty-seventh (47th)." "Forty-eighth" corresponds with the cardinal number "forty-eight (48)." See also Number Names.
2. The compound adjective and noun "forty-eighth (1/48)" means "divided by forty-eight (24)."
forty-fifthThe compound adjective, adverb, and noun "forty-fifth (45th)" is the standard name for "the ordinal number that follows forty-fourth (44th)." "Forty-fifth" corresponds with the cardinal number "forty-five (45)." See also Number Names.
forty-firstThe compound adjective, adverb, and noun "forty-first (41st)" is the standard name for "the ordinal number that follows fortieth (40th)." "Forty-first" corresponds with the cardinal number "forty-one (41)." See also Number Names.
forty-fiveThe noun and adjective "forty-five (45)" is the standard name for "the cardinal number that follows forty-four (44)." "Forty-five" corresponds with the ordinal number "forty-fifth (45th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-fourThe noun and adjective "forty-four (44)" is the standard name for "the cardinal number that follows forty-three (43)." "Forty-four" corresponds with the ordinal number "forty-fourth (44th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-fourthThe compound adjective, adverb, and noun "forty-fourth (44th)" is the standard name for "the ordinal number that follows forty-third (43rd or 43d)." "Forty-fourth" corresponds with the cardinal number "forty-four (44)." See also Number Names.
forty-nineThe noun and adjective "forty-nine (49)" is the standard name for "the cardinal number that follows forty-eight (48)." "Forty-nine" corresponds with the ordinal number "forty-ninth (49th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-ninthThe compound adjective, adverb, and noun "forty-ninth (49th)" is the standard name for "the ordinal number that follows forty-eighth (48th)." "Forty-ninth" corresponds with the cardinal number "forty-nine (49)." See also Number Names.
forty-oneThe noun and adjective "forty-one (41)" is the standard name for "the cardinal number that follows forty (40)." "Forty-one" corresponds with the ordinal number "forty-first (41st)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-secondThe compound adjective, adverb, and noun "forty-second (42nd or 42d)" is the standard name for "the ordinal number that follows forty-first (41st)." "Forty-second" corresponds with the cardinal number "forty-two (42)." See also Number Names.
forty-sevenThe noun and adjective "forty-seven (47)" is the standard name for "the cardinal number that follows forty-six (46)." "Forty-seven" corresponds with the ordinal number "forty-seventh (47th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-seventhThe compound adjective, adverb, and noun "forty-seventh (47th)" is the standard name for "the ordinal number that follows forty-sixth (46th)." "Forty-seventh" corresponds with the cardinal number "forty-seven (47)." See also Number Names.
forty-sixThe noun and adjective "forty-six (46)" is the standard name for "the cardinal number that follows forty-five (45)." "Forty-six" corresponds with the ordinal number "forty-sixth (46th)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-sixthThe compound adjective, adverb, and noun "forty-sixth (46th)" is the standard name for "the ordinal number that follows forty-fifth (45th)." "Forty-sixth" corresponds with the cardinal number "forty-six (46)." See also Number Names.
forty-somethingThe compound noun and adjective "forty-something" means "at least forty (40) but less than fifty (50)." "Forty-something" most commonly means "between forty (40) and fifty (50) years of age." See also "quadragenarian."
forty-thirdThe compound adjective, adverb, and noun "forty-third (43rd or 43d)" is the standard name for "the ordinal number that follows forty-second (42nd or 42d)." "Forty-third" corresponds with the cardinal number "forty-three (43)." See also Number Names.
forty-threeThe noun and adjective "forty-three (43)" is the standard name for "the cardinal number that follows forty-two (42)." "Forty-three" corresponds with the ordinal number "forty-third (43rd or 43d)." See also Number Names, Number Notation Systems, and Integer Factors.
forty-twoThe noun and adjective "forty-two (42)" is the standard name for "the cardinal number that follows forty-one (41)." "Forty-two" corresponds with the ordinal number "forty-second (42nd or 42d)." See also Number Names, Number Notation Systems, and Integer Factors. See also the answer to the great question of "life, the universe, and everything."
fourThe noun, pronoun, and adjective "four (4)" is the standard name for "the cardinal number that follows three (3)." "Four" equals "two to the second power (22)." "Four" corresponds with the ordinal number "fourth (4th)." See also Number Names, Number Notation Systems, and Integer Factors.
fourscoreThe noun and adjective "fourscore" means "eighty (80)."
fourscore and tenThe compound noun and adjective "fourscore and ten" means "ninety (90)."
four-starThe compound adjective "four-star (4-star)" means "of highest quality based upon the one (1) to four (4) star rating system often used to evaluate movies, etc."
fourteenThe noun, pronoun, and adjective "fourteen (14)" is the standard name for "the cardinal number that follows thirteen (13)." "Fourteen" corresponds with the ordinal number "fourteenth (14th)." See also Number Names, Number Notation Systems, and Integer Factors.
fourteenthThe adjective, adverb, and noun "fourteenth (14th)" is the standard name for "the ordinal number that follows thirteenth (13th)." "Fourteenth" corresponds with the cardinal number "fourteen (14)." See also Number Names.
2. The adjective and noun "fourteenth (1/14)" means "divided by fourteen (14)."
fourth1. The adjective, adverb, and noun "fourth (4th)" is the standard name for "the ordinal number that follows third (3rd or 3d)." "Fourth" corresponds with the cardinal number "four (4)." See also Number Names.
2. The adjective and noun "fourth (1/4)" means "divided by four (4)." See also "quarter."
fourth cousinThe compound noun "fourth (4th) cousin" means "an individual sharing a common pair of great-great-great-grandparents with the referenced individual."
Fourth WorldThe compound noun and adjective "Fourth (4th) World" means "the poorest nations of the world, more specifically, those nations whose per capita gross domestic product (GDP) is less than about one fifth (20%) the average per capita gross domestic product of all the Earth's population (about $1,600 USD per person per year in 2003.)" See origin note at "Third World."
fractionThe noun "fraction" means "a rational number expressed as one integer divided by another integer." See also Fraction.
G-The metric prefix symbol G- (metric prefix: "giga-" ) denotes a multiple of ten to the ninth power (109 = 1E+09 = 1,000,000,000) as defined by Le Système International d'Unités (SI).
γThe Greek lower case letter γ {gamma} represents "Euler's Constant," also known as the "Euler-Mascheroni Constant," γ is approximately 0.577 215 664 902. See also 'Euler-Mascheroni Constant, γ.'
Gi-The compound binary prefix symbol Gi- (binary prefix: "gibi-" ) denotes a multiple of two to the thirtieth power (230 = 1,073,741,824) as defined by the International Electrotechnical Commission (IEC). See also "gigabinary."
gibi-The binary prefix "gibi-" (prefix symbol: Gi- ) denotes a multiple of two to the thirtieth power (230 = 1,073,741,824) as defined by the International Electrotechnical Commission (IEC). See also "gigabinary."
gibinThe adjective and noun "gibin" means "two to the thirtieth power (230 = 1,073,741,824)." See also "gigabinary" and "gibi-."
giga-The metric prefix "giga-" (prefix symbol: G- ) denotes a multiple of ten to the ninth power (109 = 1E+09 = 1,000,000,000) as defined by Le Système International d'Unités (SI).
gigabinaryThe adjective "gigabinary" means "two to the thirtieth power (230 = 1,073,741,824)." See also binary prefix "gibi-" and compound binary prefix symbol "Gi-."
Golden RatioThe "Golden Ratio" (symbol: φ {Greek lower case letter phi} ) is the irrational number that is one greater than its multiplicative inverse, i.e., φ = 1 + 1/φ = (1+5½)/2 = approximately 1.618 033 988 750. The ancient Egyptians discovered φ, which they honored as their "Sacred Ratio." The ancient Greeks used φ extensively in art and architecture and treasured as their "Golden Ratio." The ancient Egyptians discovered φ, which they honored as their "Sacred Ratio." The ancient Greeks treasured φ as their "Golden Ratio." The ratio φ is used extensively in art and architecture. See also The Golden Mean and Golden Ratio.
googolThe noun "googol" means "ten to the one hundredth power (10100 = 1E+100 )." The word "googol" was invented by Milton Sirotta, the 9-year-old nephew of mathematician Edward Kasner, who had asked his nephew what he thought such a large number should be called.
googolplexThe noun "googolplex" means "ten to the googol power (10googol = 1E+(1E+100))."
goose eggThe compound noun "goose egg" is a euphemism for "the digit zero (0)."
gradeIn angular measurement, the noun and adjective "grade" means "one four-hundredth (1/400 = 0.002 500) of a circle."
grand grossThe compound noun "grand gross" means "one dozen dozen dozen (1728)."
grossThe noun "gross" means "one dozen dozen (144)."
h-The traditional metric prefix symbol h- (metric prefix: "hecto-" ) denotes a multiple of one hundred (100).
halfThe singular noun and adjective "half (1/2)" means "divided by two (2)." The plural of "half" is "halves." A "half" coin has a value of "one half of a dollar ($0.50)." See also the verb "halve."
half a hundredThe compound noun and adjective "half a hundred" means "fifty (50)."
half centuryThe compound noun "half century" means "fifty (50) years."
half decadeThe compound noun "half decade" means "five (5) years."
half dozenThe compound noun and adjective "half dozen" means "six (6)."
halveThe verb "halve" means "to divide by two (2)." See also the noun and adjective "half/halves."
halvesThe plural noun and adjective "halves (1/2)" means "divided by two (2)." The singular of "halves" is "half." See also the verb "halve."
hecatohedronThe noun "hecatohedron" means "a solid figure with one hundred (100) faces."
hecta-The prefix "hecta-" means "one hundred (100)." See also Numeric Prefixes Used In Chemistry.
hectadThe noun and adjective "hectad" means "a group of one hundred (100) members." See also Prefixes & Words Based On Greek Number Names.
hecto-The traditional metric prefix "hecto-" (prefix symbol: h- ) denotes a multiple of one hundred (100). See also Prefixes & Words Based On Greek Number Names.
hectogonThe noun and adjective "hectogon" means "a plain figure with one hundred (100) straight sides." See also Prefixes & Words Based On Greek Number Names.
hectogramThe noun and adjective "hectogram" means "an interconnected star figure with one hundred (100) points formed by stellating a hectogon." See also Prefixes & Words Based On Greek Number Names.
hectohedronThe noun and adjective "hectohedron" means "a solid figure with one hundred (100) planar faces." See also Prefixes & Words Based On Greek Number Names.
hemi-The Greek-based numeric prefix "hemi-" means "one half (1/2)." See also Prefixes & Words Based On Greek Number Names.
hen-The Greek-based numeric prefix "hen-" means "one (1)."
hendeca-The prefix "hendeca-" means "eleven (11)." See also Prefixes & Words Based On Greek Number Names.
hendecadThe noun and adjective "hendecad" means "a group of eleven (11) members." See also Prefixes & Words Based On Greek Number Names.
hendecagonThe noun and adjective "hendecagon" means "a plain figure with eleven (11) straight sides." See also Prefixes & Words Based On Greek Number Names.
hendecagram1. The noun and adjective "hendecagram" means "an interconnected star figure with eleven (11) points formed by stellating a hendecagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "hendecagram" means "a word or character sequence consisting of eleven (11) characters."
hendecahedronThe noun and adjective "hendecahedron" means "a solid figure with eleven (11) planar faces." See also Prefixes & Words Based On Greek Number Names.
henheptaconta-The prefix "henheptaconta-" means "seventy-one (71)." See also Numeric Prefixes Used In Chemistry.
henhexaconta-The prefix "henhexaconta-" means "sixty-one (61)." See also Numeric Prefixes Used In Chemistry.
henicosa-The prefix "henicosa-" means "twenty-one (21)." See also Numeric Prefixes Used In Chemistry.
hennonaconta-The prefix "hennonaconta-" means "ninety-one (91)." See also Numeric Prefixes Used In Chemistry.
henoctaconta-The prefix "henoctaconta-" means "eighty-one (81)." See also Numeric Prefixes Used In Chemistry.
henpentaconta-The prefix "henpentaconta-" means "fifty-one (51)." See also Numeric Prefixes Used In Chemistry.
hentetraconta-The prefix "hentetraconta-" means "forty-one (41)." See also Numeric Prefixes Used In Chemistry.
hentriaconta-The prefix "hentriaconta-" means "thirty-one (31)." See also Numeric Prefixes Used In Chemistry.
hepta-The prefix "hepta-" means "seven (7)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
heptaconta-The prefix "heptaconta-" means "seventy (70)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
heptacontadThe noun and adjective "heptacontad" means "a group of seventy (70) members." See also Prefixes & Words Based On Greek Number Names.
heptacontadi-The prefix "heptacontadi-" means "seventy-two (72)." "Heptacontadi-" is an alternate form of the prefix "heptacontakaidi-." See also Prefixes & Words Based On Greek Number Names.
heptacontaennea-The prefix "heptacontaennea-" means "seventy-nine (79)." "Heptacontaennea-" is an alternate form of the prefix "heptacontakaiennea-."
heptacontagonThe noun and adjective "heptacontagon" means "a plain figure with seventy (70) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontagramThe noun and adjective "heptacontagram" means "an interconnected star figure with seventy (70) points formed by stellating a heptacontagon." See also Prefixes & Words Based On Greek Number Names.
heptacontahedronThe noun and adjective "heptacontahedron" means "a solid figure with seventy (70) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontahena-The prefix "heptacontahena-" means "seventy-one (71)." "Heptacontahena-" is an alternate form of the prefix "heptacontakaihena-." See also Prefixes & Words Based On Greek Number Names.
heptacontahepta-The prefix "heptacontahepta-" means "seventy-seven (77)." "Heptacontahepta-" is an alternate form of the prefix "heptacontakaihepta-."
heptacontahexa-The prefix "heptacontahexa-" means "seventy-six (76)." "Heptacontahexa-" is an alternate form of the prefix "heptacontakaihexa-."
heptacontakaidi-The prefix "heptacontakaidi-" means "seventy-two (72)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaidigonThe noun and adjective "heptacontakaidigon" means "a plain figure with seventy-two (72) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaidigramThe noun and adjective "heptacontakaidigram" means "an interconnected star figure with seventy-two (72) points formed by stellating a heptacontakaidigon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaidihedronThe noun and adjective "heptacontakaidihedron" means "a solid figure with seventy-two (72) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaidyadThe noun and adjective "heptacontakaidyad" means "a group of seventy-two (72) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaiennea-The prefix "heptacontakaiennea-" means "seventy-nine (79)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaienneadThe noun and adjective "heptacontakaiennead" means "a group of seventy-nine (79) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaienneagonThe noun and adjective "heptacontakaienneagon" means "a plain figure with seventy-nine (79) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaienneagramThe noun and adjective "heptacontakaienneagram" means "an interconnected star figure with seventy-nine (79) points formed by stellating a heptacontakaienneagon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaienneahedronThe noun and adjective "heptacontakaienneahedron" means "a solid figure with seventy-nine (79) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihena-The prefix "heptacontakaihena-" means "seventy-one (71)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihenadThe noun and adjective "heptacontakaihenad" means "a group of seventy-one (71) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihenagonThe noun and adjective "heptacontakaihenagon" means "a plain figure with seventy-one (71) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihenagramThe noun and adjective "heptacontakaihenagram" means "an interconnected star figure with seventy-one (71) points formed by stellating a heptacontakaihenagon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihenahedronThe noun and adjective "heptacontakaihenahedron" means "a solid figure with seventy-one (71) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihepta-The prefix "heptacontakaihepta-" means "seventy-seven (77)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaiheptadThe noun and adjective "heptacontakaiheptad" means "a group of seventy-seven (77) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaiheptagonThe noun and adjective "heptacontakaiheptagon" means "a plain figure with seventy-seven (77) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaiheptagramThe noun and adjective "heptacontakaiheptagram" means "an interconnected star figure with seventy-seven (77) points formed by stellating a heptacontakaiheptagon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaiheptahedronThe noun and adjective "heptacontakaiheptahedron" means "a solid figure with seventy-seven (77) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihexa-The prefix "heptacontakaihexa-" means "seventy-six (76)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihexadThe noun and adjective "heptacontakaihexad" means "a group of seventy-six (76) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihexagonThe noun and adjective "heptacontakaihexagon" means "a plain figure with seventy-six (76) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihexagramThe noun and adjective "heptacontakaihexagram" means "an interconnected star figure with seventy-six (76) points formed by stellating a heptacontakaihexagon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaihexahedronThe noun and adjective "heptacontakaihexahedron" means "a solid figure with seventy-six (76) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaiocta-The prefix "heptacontakaiocta-" means "seventy-eight (78)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaioctadThe noun and adjective "heptacontakaioctad" means "a group of seventy-eight (78) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaioctagonThe noun and adjective "heptacontakaioctagon" means "a plain figure with seventy-eight (78) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaioctagramThe noun and adjective "heptacontakaioctagram" means "an interconnected star figure with seventy-eight (78) points formed by stellating a heptacontakaioctagon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaioctahedronThe noun and adjective "heptacontakaioctahedron" means "a solid figure with seventy-eight (78) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaipenta-The prefix "heptacontakaipenta-" means "seventy-five (75)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaipentadThe noun and adjective "heptacontakaipentad" means "a group of seventy-five (75) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaipentagonThe noun and adjective "heptacontakaipentagon" means "a plain figure with seventy-five (75) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaipentagramThe noun and adjective "heptacontakaipentagram" means "an interconnected star figure with seventy-five (75) points formed by stellating a heptacontakaipentagon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaipentahedronThe noun and adjective "heptacontakaipentahedron" means "a solid figure with seventy-five (75) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitetra-The prefix "heptacontakaitetra-" means "seventy-four (74)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitetradThe noun and adjective "heptacontakaitetrad" means "a group of seventy-four (74) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitetragonThe noun and adjective "heptacontakaitetragon" means "a plain figure with seventy-four (74) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitetragramThe noun and adjective "heptacontakaitetragram" means "an interconnected star figure with seventy-four (74) points formed by stellating a heptacontakaitetragon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitetrahedronThe noun and adjective "heptacontakaitetrahedron" means "a solid figure with seventy-four (74) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitri-The prefix "heptacontakaitri-" means "seventy-three (73)." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitriadThe noun and adjective "heptacontakaitriad" means "a group of seventy-three (73) members." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitrigonThe noun and adjective "heptacontakaitrigon" means "a plain figure with seventy-three (73) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitrigramThe noun and adjective "heptacontakaitrigram" means "an interconnected star figure with seventy-three (73) points formed by stellating a heptacontakaitrigon." See also Prefixes & Words Based On Greek Number Names.
heptacontakaitrihedronThe noun and adjective "heptacontakaitrihedron" means "a solid figure with seventy-three (73) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptacontaocta-The prefix "heptacontaocta-" means "seventy-eight (78)." "Heptacontaocta-" is an alternate form of the prefix "heptacontakaiocta-." See also Prefixes & Words Based On Greek Number Names.
heptacontapenta-The prefix "heptacontapenta-" means "seventy-five (75)." "Heptacontapenta-" is an alternate form of the prefix "heptacontakaipenta-."
heptacontatetra-The prefix "heptacontatetra-" means "seventy-four (74)." "Heptacontatetra-" is an alternate form of the prefix "heptacontakaitetra-."
heptacontatri-The prefix "heptacontatri-" means "seventy-three (73)." "Heptacontatri-" is an alternate form of the prefix "heptacontakaitri-."
heptacta-The prefix "heptacta-" means "seven hundred (700)." See also Numeric Prefixes Used In Chemistry.
heptadThe noun and adjective "heptad" means "a group of seven (7) members." See also Prefixes & Words Based On Greek Number Names.
heptadeca-The prefix "heptadeca-" means "seventeen (17)." See also Numeric Prefixes Used In Chemistry.
heptagonThe noun and adjective "heptagon" means "a plain figure with seven (7) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptagram1. The noun and adjective "heptagram" means "an interconnected star figure with seven (7) points formed by stellating a heptagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "heptagram" means "a word or character sequence consisting of seven (7) characters."
heptahedronThe noun and adjective "heptahedron" means "a solid figure with seven (7) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptaheptaconta-The prefix "heptaheptaconta-" means "seventy-seven (77)." See also Numeric Prefixes Used In Chemistry.
heptahexaconta-The prefix "heptahexaconta-" means "sixty-seven (67)." See also Numeric Prefixes Used In Chemistry.
heptaicosa-The prefix "heptaicosa-" means "twenty-seven (27)." See also Numeric Prefixes Used In Chemistry.
heptakaideca-The prefix "heptakaideca-" means "seventeen (17)." See also Prefixes & Words Based On Greek Number Names.
heptakaidecadThe noun and adjective "heptakaidecad" means "a group of seventeen (17) members." See also Prefixes & Words Based On Greek Number Names.
heptakaidecagonThe noun and adjective "heptakaidecagon" means "a plain figure with seventeen (17) straight sides." See also Prefixes & Words Based On Greek Number Names.
heptakaidecagramThe noun and adjective "heptakaidecagram" means "an interconnected star figure with seventeen (17) points formed by stellating a heptakaidecagon." See also Prefixes & Words Based On Greek Number Names.
heptakaidecahedronThe noun and adjective "heptakaidecahedron" means "a solid figure with seventeen (17) planar faces." See also Prefixes & Words Based On Greek Number Names.
heptalia-The prefix "heptalia-" means "seven thousand (7000)." See also Numeric Prefixes Used In Chemistry.
heptameterThe noun "heptameter" means "a verse consisting of seven (7) metrical feet."
heptangleThe noun "heptangle" means "a plane figure with seven (7) vertices."
heptanonaconta-The prefix "heptanonaconta-" means "ninety-seven (97)." See also Numeric Prefixes Used In Chemistry.
heptaoctaconta-The prefix "heptaoctaconta-" means "eighty-seven (87)." See also Numeric Prefixes Used In Chemistry.
heptapentaconta-The prefix "heptapentaconta-" means "fifty-seven (57)." See also Numeric Prefixes Used In Chemistry.
heptatetraconta-The prefix "heptatetraconta-" means "forty-seven (47)." See also Numeric Prefixes Used In Chemistry.
heptathlonThe noun "heptathlon" means "an athletic competition consisting of seven (7) separate events."
heptatriaconta-The prefix "heptatriaconta-" means "thirty-seven (37)." See also Numeric Prefixes Used In Chemistry.
hexa-The prefix "hexa-" means "six (6)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
hexaconta-The prefix "hexaconta-" means "sixty (60)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
hexacontadThe noun and adjective "hexacontad" means "a group of sixty (60) members." See also Prefixes & Words Based On Greek Number Names.
hexacontadi-The prefix "hexacontadi-" means "sixty-two (62)." "Hexacontadi-" is an alternate form of the prefix "hexacontakaidi-." See also Prefixes & Words Based On Greek Number Names.
hexacontaennea-The prefix "hexacontaennea-" means "sixty-nine (69)." "Hexacontaennea-" is an alternate form of the prefix "hexacontakaiennea-."
hexacontagonThe noun and adjective "hexacontagon" means "a plain figure with sixty (60) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontagramThe noun and adjective "hexacontagram" means "an interconnected star figure with sixty (60) points formed by stellating a hexacontagon." See also Prefixes & Words Based On Greek Number Names.
hexacontahedronThe noun and adjective "hexacontahedron" means "a solid figure with sixty (60) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontahena-The prefix "hexacontahena-" means "sixty-one (61)." "Hexacontahena-" is an alternate form of the prefix "hexacontakaihena-." See also Prefixes & Words Based On Greek Number Names.
hexacontahepta-The prefix "hexacontahepta-" means "sixty-seven (67)." "Hexacontahepta-" is an alternate form of the prefix "hexacontakaihepta-."
hexacontahexa-The prefix "hexacontahexa-" means "sixty-six (66)." "Hexacontahexa-" is an alternate form of the prefix "hexacontakaihexa-."
hexacontakaidi-The prefix "hexacontakaidi-" means "sixty-two (62)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaidigonThe noun and adjective "hexacontakaidigon" means "a plain figure with sixty-two (62) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaidigramThe noun and adjective "hexacontakaidigram" means "an interconnected star figure with sixty-two (62) points formed by stellating a hexacontakaidigon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaidihedronThe noun and adjective "hexacontakaidihedron" means "a solid figure with sixty-two (62) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaidyadThe noun and adjective "hexacontakaidyad" means "a group of sixty-two (62) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaiennea-The prefix "hexacontakaiennea-" means "sixty-nine (69)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaienneadThe noun and adjective "hexacontakaiennead" means "a group of sixty-nine (69) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaienneagonThe noun and adjective "hexacontakaienneagon" means "a plain figure with sixty-nine (69) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaienneagramThe noun and adjective "hexacontakaienneagram" means "an interconnected star figure with sixty-nine (69) points formed by stellating a hexacontakaienneagon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaienneahedronThe noun and adjective "hexacontakaienneahedron" means "a solid figure with sixty-nine (69) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihena-The prefix "hexacontakaihena-" means "sixty-one (61)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihenadThe noun and adjective "hexacontakaihenad" means "a group of sixty-one (61) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihenagonThe noun and adjective "hexacontakaihenagon" means "a plain figure with sixty-one (61) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihenagramThe noun and adjective "hexacontakaihenagram" means "an interconnected star figure with sixty-one (61) points formed by stellating a hexacontakaihenagon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihenahedronThe noun and adjective "hexacontakaihenahedron" means "a solid figure with sixty-one (61) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihepta-The prefix "hexacontakaihepta-" means "sixty-seven (67)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaiheptadThe noun and adjective "hexacontakaiheptad" means "a group of sixty-seven (67) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaiheptagonThe noun and adjective "hexacontakaiheptagon" means "a plain figure with sixty-seven (67) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaiheptagramThe noun and adjective "hexacontakaiheptagram" means "an interconnected star figure with sixty-seven (67) points formed by stellating a hexacontakaiheptagon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaiheptahedronThe noun and adjective "hexacontakaiheptahedron" means "a solid figure with sixty-seven (67) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihexa-The prefix "hexacontakaihexa-" means "sixty-six (66)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihexadThe noun and adjective "hexacontakaihexad" means "a group of sixty-six (66) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihexagonThe noun and adjective "hexacontakaihexagon" means "a plain figure with sixty-six (66) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihexagramThe noun and adjective "hexacontakaihexagram" means "an interconnected star figure with sixty-six (66) points formed by stellating a hexacontakaihexagon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaihexahedronThe noun and adjective "hexacontakaihexahedron" means "a solid figure with sixty-six (66) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaiocta-The prefix "hexacontakaiocta-" means "sixty-eight (68)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaioctadThe noun and adjective "hexacontakaioctad" means "a group of sixty-eight (68) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaioctagonThe noun and adjective "hexacontakaioctagon" means "a plain figure with sixty-eight (68) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaioctagramThe noun and adjective "hexacontakaioctagram" means "an interconnected star figure with sixty-eight (68) points formed by stellating a hexacontakaioctagon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaioctahedronThe noun and adjective "hexacontakaioctahedron" means "a solid figure with sixty-eight (68) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaipenta-The prefix "hexacontakaipenta-" means "sixty-five (65)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaipentadThe noun and adjective "hexacontakaipentad" means "a group of sixty-five (65) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaipentagonThe noun and adjective "hexacontakaipentagon" means "a plain figure with sixty-five (65) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaipentagramThe noun and adjective "hexacontakaipentagram" means "an interconnected star figure with sixty-five (65) points formed by stellating a hexacontakaipentagon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaipentahedronThe noun and adjective "hexacontakaipentahedron" means "a solid figure with sixty-five (65) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitetra-The prefix "hexacontakaitetra-" means "sixty-four (64)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitetradThe noun and adjective "hexacontakaitetrad" means "a group of sixty-four (64) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitetragonThe noun and adjective "hexacontakaitetragon" means "a plain figure with sixty-four (64) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitetragramThe noun and adjective "hexacontakaitetragram" means "an interconnected star figure with sixty-four (64) points formed by stellating a hexacontakaitetragon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitetrahedronThe noun and adjective "hexacontakaitetrahedron" means "a solid figure with sixty-four (64) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitri-The prefix "hexacontakaitri-" means "sixty-three (63)." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitriadThe noun and adjective "hexacontakaitriad" means "a group of sixty-three (63) members." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitrigonThe noun and adjective "hexacontakaitrigon" means "a plain figure with sixty-three (63) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitrigramThe noun and adjective "hexacontakaitrigram" means "an interconnected star figure with sixty-three (63) points formed by stellating a hexacontakaitrigon." See also Prefixes & Words Based On Greek Number Names.
hexacontakaitrihedronThe noun and adjective "hexacontakaitrihedron" means "a solid figure with sixty-three (63) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexacontaocta-The prefix "hexacontaocta-" means "sixty-eight (68)." "Hexacontaocta-" is an alternate form of the prefix "hexacontakaiocta-." See also Prefixes & Words Based On Greek Number Names.
hexacontapenta-The prefix "hexacontapenta-" means "sixty-five (65)." "Hexacontapenta-" is an alternate form of the prefix "hexacontakaipenta-."
hexacontatetra-The prefix "hexacontatetra-" means "sixty-four (64)." "Hexacontatetra-" is an alternate form of the prefix "hexacontakaitetra-."
hexacontatri-The prefix "hexacontatri-" means "sixty-three (63)." "Hexacontatri-" is an alternate form of the prefix "hexacontakaitri-."
hexacta-The prefix "hexacta-" means "six hundred (600)." See also Numeric Prefixes Used In Chemistry.
hexadThe noun and adjective "hexad" means "a group of six (6) members." See also Prefixes & Words Based On Greek Number Names.
hexadeca-The prefix "hexadeca-" means "sixteen (16)." See also Numeric Prefixes Used In Chemistry.
hexadecimalThe adjective "hexadecimal" means "based on the number sixteen (16)." See also "base sixteen" and Base Number Notation.
Usage: A numeral system based on the number sixteen (16) is properly called "sexdecimal." The more common term "hexadecimal" is a bizarre combination of the Greek-based prefix "hexakaideca-" (16) and the Latin-based term "sexdecimal" (16) in an apparent attempt to rid mathematics of the evil influence of "sex-."
hexagonThe noun and adjective "hexagon" means "a plain figure with six (6) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexagram1. The noun and adjective "hexagram" means "an interconnected star figure with six (6) points formed by stellating a hexagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "hexagram" means "a word or character sequence consisting of six (6) characters."
hexahedronThe noun and adjective "hexahedron" means "a solid figure with six (6) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexaheptaconta-The prefix "hexaheptaconta-" means "seventy-six (76)." See also Numeric Prefixes Used In Chemistry.
hexahexaconta-The prefix "hexahexaconta-" means "sixty-six (66)." See also Numeric Prefixes Used In Chemistry.
hexaicosa-The prefix "hexaicosa-" means "twenty-six (26)." See also Numeric Prefixes Used In Chemistry.
hexakaideca-The prefix "hexakaideca-" means "sixteen (16)." See also Prefixes & Words Based On Greek Number Names.
hexakaidecadThe noun and adjective "hexakaidecad" means "a group of sixteen (16) members." See also Prefixes & Words Based On Greek Number Names.
hexakaidecagonThe noun and adjective "hexakaidecagon" means "a plain figure with sixteen (16) straight sides." See also Prefixes & Words Based On Greek Number Names.
hexakaidecagramThe noun and adjective "hexakaidecagram" means "an interconnected star figure with sixteen (16) points formed by stellating a hexakaidecagon." See also Prefixes & Words Based On Greek Number Names.
hexakaidecahedronThe noun and adjective "hexakaidecahedron" means "a solid figure with sixteen (16) planar faces." See also Prefixes & Words Based On Greek Number Names.
hexalia-The prefix "hexalia-" means "six thousand (6000)." See also Numeric Prefixes Used In Chemistry.
hexameterThe noun "hexameter" means "a verse consisting of six (6) metrical feet."
hexangleThe noun "hexangle" means "a plane figure with six (6) vertices."
hexanonaconta-The prefix "hexanonaconta-" means "ninety-six (96)." See also Numeric Prefixes Used In Chemistry.
hexaoctaconta-The prefix "hexaoctaconta-" means "eighty-six (86)." See also Numeric Prefixes Used In Chemistry.
hexapentaconta-The prefix "hexapentaconta-" means "fifty-six (56)." See also Numeric Prefixes Used In Chemistry.
hexatetraconta-The prefix "hexatetraconta-" means "forty-six (46)." See also Numeric Prefixes Used In Chemistry.
hexatriaconta-The prefix "hexatriaconta-" means "thirty-six (36)." See also Numeric Prefixes Used In Chemistry.
hourThe noun "hour" means "one twenty-fourth (1/24) of a day."
Origin: In antiquity, each night was divided into twelve (12) hours and each daytime was divided into twelve (12) hours. The duration of night hours and daylight hours changed with latitude and the seasons. Modern timekeeping has changed the definition of an hour to a fixed duration equal to thirty-six hundred (3,600) Universal Coordinated Time (UTC) seconds.
hourlyThe adjective "hourly" means "recurring once (1) each hour."
hundredThe noun and adjective "hundred" means "multiplied by one hundred (100))." See also Number Names.
hundredth1. As part of the name of an ordinal number, the noun and adjective "hundredth" means "a multiple of one hundred (100)."
2. As part of the name of a rational fraction, the noun and adjective "hundredth" means "divided by one hundred (1/100 = 0.010)."
hundredweightThe noun and adjective "hundredweight" (abbreviated cwt.) means "one hundred (100) pounds."
iThe Latin lower case letter "i" represents the "imaginary unit," the imaginary number that is the square root of minus one (-1). See also "Imaginary Unit."
icosa-The prefix "icosa-" means "twenty (20)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
icosadThe noun and adjective "icosad" means "a group of twenty (20) members." See also Prefixes & Words Based On Greek Number Names.
icosagonThe noun and adjective "icosagon" means "a plain figure with twenty (20) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosagramThe noun and adjective "icosagram" means "an interconnected star figure with twenty (20) points formed by stellating a icosagon." See also Prefixes & Words Based On Greek Number Names.
icosahedronThe noun and adjective "icosahedron" means "a solid figure with twenty (20) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosidi-The prefix "icosidi-" means "twenty-two (22)." "Icosidi-" is an alternate form of the prefix "icosikaidi-." See also Prefixes & Words Based On Greek Number Names.
icosiennea-The prefix "icosiennea-" means "twenty-nine (29)." "Icosiennea-" is an alternate form of the prefix "icosikaiennea-."
icosihena-The prefix "icosihena-" means "twenty-one (21)." "Icosihena-" is an alternate form of the prefix "icosikaihena-."
icosihepta-The prefix "icosihepta-" means "twenty-seven (27)." "Icosihepta-" is an alternate form of the prefix "icosikaihepta-."
icosihexa-The prefix "icosihexa-" means "twenty-six (26)." "Icosihexa-" is an alternate form of the prefix "icosikaihexa-."
icosikaidi-The prefix "icosikaidi-" means "twenty-two (22)." See also Prefixes & Words Based On Greek Number Names.
icosikaidigonThe noun and adjective "icosikaidigon" means "a plain figure with twenty-two (22) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaidigramThe noun and adjective "icosikaidigram" means "an interconnected star figure with twenty-two (22) points formed by stellating a icosikaidigon." See also Prefixes & Words Based On Greek Number Names.
icosikaidihedronThe noun and adjective "icosikaidihedron" means "a solid figure with twenty-two (22) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaidyadThe noun and adjective "icosikaidyad" means "a group of twenty-two (22) members." See also Prefixes & Words Based On Greek Number Names.
icosikaiennea-The prefix "icosikaiennea-" means "twenty-nine (29)." See also Prefixes & Words Based On Greek Number Names.
icosikaienneadThe noun and adjective "icosikaiennead" means "a group of twenty-nine (29) members." See also Prefixes & Words Based On Greek Number Names.
icosikaienneagonThe noun and adjective "icosikaienneagon" means "a plain figure with twenty-nine (29) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaienneagramThe noun and adjective "icosikaienneagram" means "an interconnected star figure with twenty-nine (29) points formed by stellating a icosikaienneagon." See also Prefixes & Words Based On Greek Number Names.
icosikaienneahedronThe noun and adjective "icosikaienneahedron" means "a solid figure with twenty-nine (29) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaihena-The prefix "icosikaihena-" means "twenty-one (21)." See also Prefixes & Words Based On Greek Number Names.
icosikaihenadThe noun and adjective "icosikaihenad" means "a group of twenty-one (21) members." See also Prefixes & Words Based On Greek Number Names.
icosikaihenagonThe noun and adjective "icosikaihenagon" means "a plain figure with twenty-one (21) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaihenagramThe noun and adjective "icosikaihenagram" means "an interconnected star figure with twenty-one (21) points formed by stellating a icosikaihenagon." See also Prefixes & Words Based On Greek Number Names.
icosikaihenahedronThe noun and adjective "icosikaihenahedron" means "a solid figure with twenty-one (21) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaihepta-The prefix "icosikaihepta-" means "twenty-seven (27)." See also Prefixes & Words Based On Greek Number Names.
icosikaiheptadThe noun and adjective "icosikaiheptad" means "a group of twenty-seven (27) members." See also Prefixes & Words Based On Greek Number Names.
icosikaiheptagonThe noun and adjective "icosikaiheptagon" means "a plain figure with twenty-seven (27) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaiheptagramThe noun and adjective "icosikaiheptagram" means "an interconnected star figure with twenty-seven (27) points formed by stellating a icosikaiheptagon." See also Prefixes & Words Based On Greek Number Names.
icosikaiheptahedronThe noun and adjective "icosikaiheptahedron" means "a solid figure with twenty-seven (27) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaihexa-The prefix "icosikaihexa-" means "twenty-six (26)." See also Prefixes & Words Based On Greek Number Names.
icosikaihexadThe noun and adjective "icosikaihexad" means "a group of twenty-six (26) members." See also Prefixes & Words Based On Greek Number Names.
icosikaihexagonThe noun and adjective "icosikaihexagon" means "a plain figure with twenty-six (26) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaihexagramThe noun and adjective "icosikaihexagram" means "an interconnected star figure with twenty-six (26) points formed by stellating a icosikaihexagon." See also Prefixes & Words Based On Greek Number Names.
icosikaihexahedronThe noun and adjective "icosikaihexahedron" means "a solid figure with twenty-six (26) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaiocta-The prefix "icosikaiocta-" means "twenty-eight (28)." See also Prefixes & Words Based On Greek Number Names.
icosikaioctadThe noun and adjective "icosikaioctad" means "a group of twenty-eight (28) members." See also Prefixes & Words Based On Greek Number Names.
icosikaioctagonThe noun and adjective "icosikaioctagon" means "a plain figure with twenty-eight (28) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaioctagramThe noun and adjective "icosikaioctagram" means "an interconnected star figure with twenty-eight (28) points formed by stellating a icosikaioctagon." See also Prefixes & Words Based On Greek Number Names.
icosikaioctahedronThe noun and adjective "icosikaioctahedron" means "a solid figure with twenty-eight (28) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaipenta-The prefix "icosikaipenta-" means "twenty-five (25)." See also Prefixes & Words Based On Greek Number Names.
icosikaipentadThe noun and adjective "icosikaipentad" means "a group of twenty-five (25) members." See also Prefixes & Words Based On Greek Number Names.
icosikaipentagonThe noun and adjective "icosikaipentagon" means "a plain figure with twenty-five (25) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaipentagramThe noun and adjective "icosikaipentagram" means "an interconnected star figure with twenty-five (25) points formed by stellating a icosikaipentagon." See also Prefixes & Words Based On Greek Number Names.
icosikaipentahedronThe noun and adjective "icosikaipentahedron" means "a solid figure with twenty-five (25) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaitetra-The prefix "icosikaitetra-" means "twenty-four (24)." See also Prefixes & Words Based On Greek Number Names.
icosikaitetradThe noun and adjective "icosikaitetrad" means "a group of twenty-four (24) members." See also Prefixes & Words Based On Greek Number Names.
icosikaitetragonThe noun and adjective "icosikaitetragon" means "a plain figure with twenty-four (24) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaitetragramThe noun and adjective "icosikaitetragram" means "an interconnected star figure with twenty-four (24) points formed by stellating a icosikaitetragon." See also Prefixes & Words Based On Greek Number Names.
icosikaitetrahedronThe noun and adjective "icosikaitetrahedron" means "a solid figure with twenty-four (24) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosikaitri-The prefix "icosikaitri-" means "twenty-three (23)." See also Prefixes & Words Based On Greek Number Names.
icosikaitriadThe noun and adjective "icosikaitriad" means "a group of twenty-three (23) members." See also Prefixes & Words Based On Greek Number Names.
icosikaitrigonThe noun and adjective "icosikaitrigon" means "a plain figure with twenty-three (23) straight sides." See also Prefixes & Words Based On Greek Number Names.
icosikaitrigramThe noun and adjective "icosikaitrigram" means "an interconnected star figure with twenty-three (23) points formed by stellating a icosikaitrigon." See also Prefixes & Words Based On Greek Number Names.
icosikaitrihedronThe noun and adjective "icosikaitrihedron" means "a solid figure with twenty-three (23) planar faces." See also Prefixes & Words Based On Greek Number Names.
icosiocta-The prefix "icosiocta-" means "twenty-eight (28)." "Icosiocta-" is an alternate form of the prefix "icosikaiocta-." See also Prefixes & Words Based On Greek Number Names.
icosipenta-The prefix "icosipenta-" means "twenty-five (25)." "Icosipenta-" is an alternate form of the prefix "icosikaipenta-."
icositetra-The prefix "icositetra-" means "twenty-four (24)." "Icositetra-" is an alternate form of the prefix "icosikaitetra-."
icositri-The prefix "icositri-" means "twenty-three (23)." "Icositri-" is an alternate form of the prefix "icosikaitri-."
imaginary numberAn imaginary number is a number that can be represented as the square root of a negative real number. See also "Imaginary Number."
imaginary unitThe "imaginary unit" (symbol: i ) is the imaginary number that is the square root of minus one (-1). See also "Imaginary Unit."
incalculableThe adjective "incalculable" means "infinite, or more generally, a very large number."
individualThe noun and adjective "individual" means "one (1) particular being or thing as distinguished from a group." See also "Individual."
infiniteThe adjective "infinite" means "greater than any assignable quantity." See also "Infinite."
infinitelyThe adverb "infinitely" means "without bound." See also "Infinity."
infinitesimalThe adjective "infinitesimal" means "smaller than any assignable quantity greater than zero." See also "Infinitesimal."
infinitesimalityThe noun "infinitesimality" (symbol: 1/∞ ) means "a quantity smaller than every real number greater than zero (0)." See also "Infinitesimal."
infinitesimallyThe adverb "infinitesimally" means "immeasurably small." See also "Infinitesimal."
infinityThe noun "infinity" (symbol: ) means "an unbounded quantity greater than every real number." See also "Infinity."
The symbol ∞ represents "infinity," an infinitely large number. See also "Infinity."
initialThe adjective "initial" means "first (1st)."
innumerableThe adjective "innumerable" means "infinite, or more generally, a very large number of individuals or discrete objects."
innumeracyThe noun "innumeracy" means "an incapacity to understand and work with numbers."
innumerateThe adjective "innumerate" means "lacking the capacity to understand and work with numbers."
innumerousThe adjective "innumerous" means "infinite, or more generally, a very large number of individuals or discrete objects."
integerAn integer is a whole number, i.e., a real number with no fractional portion. The integers include the positive integers, zero, and the negative integers. See also "Integer" and Integer Factors.
integer numberThe compound noun "integer number" means "an integer."
irrational numberAn irrational number is a real number that is not a rational number. Examples include 2½, φ, e, π, eπ, etc. See also "Irrational Number."
jThe English lower case letter "j" is an alternate symbol for the "imaginary unit" used in engineering and technology. See also "Imaginary Unit."
jillionThe slang noun and adjective "jillion" means "an very large number." "Jillion" is a parody of the Chuquet number naming system.
k-The metric prefix symbol k- (metric prefix: "kilo-" ) denotes a multiple of one thousand (103 = 1E+03 = 1,000) as defined by Le Système International d'Unités (SI).
Ki-The compound binary prefix symbol Ki- (binary prefix: "kibi-" ) denotes a multiple of two to the tenth power (210 = 1,024) as defined by the International Electrotechnical Commission (IEC). See also "kilobinary."
kibi-The binary prefix "kibi-" (prefix symbol: Ki- ) denotes a multiple of two to the tenth power (210 = 1,024) as defined by the International Electrotechnical Commission (IEC). See also "kilobinary."
kibinThe adjective and noun "kibin" means "one thousand twenty-four (210 = 1024)." See also "kilobinary."
kibinalThe adjective "kibinal" means "based on the number one thousand twenty-four (210 = 1024)." See also "kilobinary," "kibin," "mebin," "gibin," "tebin," "pebin," "exbin," and Base Number Systems.
kilia-The prefix "kilia-" means "one thousand (1000)." See also Numeric Prefixes Used In Chemistry.
kilo-The metric prefix "kilo-" (prefix symbol: k- ) denotes a multiple of one thousand (103 = 1E+03 = 1,000) as defined by Le Système International d'Unités (SI).
kilobinaryThe adjective "kilobinary" means "two to the tenth power (210 = 1,024)." See also binary prefix "kibi-" and compound binary prefix symbol "Ki-."
lacThe adjective and noun "lac" is an alternate spelling of "lakh."
lakhThe adjective and noun "lakh" means "one hundred thousand (100,000 usually punctuated 1,00,000 in India.)"
leastThe superlative adjective "least" means "the smallest non-discrete quantity." See usage note at "few."
lessThe comparative adjective "less" means "a smaller non-discrete quantity." See usage note at "few."
lesserThe comparative adjective "lesser" means "having a smaller size or quantity."
life, the universe, and everythingAccording to The Hitchhiker's Guide to the Galaxy, the answer to the great question of "life, the universe, and everything" is "forty-two (42)." Watch Deep Thought make its grand pronouncement after 7,500,000 years of exhaustive cogitation.
littleThe positive adjective "little" means "having a relatively small size or quantity." See usage note at "few."
loneThe adjective "lone" means "one (1)."
long dozenThe compound noun "long dozen" means "thirteen (13)."
lustrumThe noun "lustrum" means "a period of five (5) years."
m-The metric prefix symbol m- (metric prefix: "milli-" ) denotes a multiple of one one-thousandth (10-3 = 1E-03 = 0.001) as defined by Le Système International d'Unités (SI).
M-The metric prefix symbol M- (metric prefix: "mega-" ) denotes a multiple of one million (106 = 1E+06 = 1,000,000) as defined by Le Système International d'Unités (SI).
majorityThe noun "majority" means "more than one half of the members of a group." For example, a majority of 25 is 13 to 25 and a majority of 26 is 14 to 26.
manyThe noun and positive adjective "many" means "a relatively large number of individuals or discrete objects."
Usage: The adjectives "many/more/most" are used with count nouns and collection nouns (integers), while the adjectives "much/more/most" are used with mass nouns (non-discrete quantities).
Example: "Many students feel they spend too much money on books."
mark twainThe archaic expression "mark twain" was used by Nineteenth Century American rivermen to denote a "water depth of two (2) fathoms (approximately 3.7 meters.)" American writer Samuel Langhorne Clemens (1835-1910) used "Mark Twain" as his pseudonym.
mebi-The binary prefix "mebi-" (prefix symbol: Mi- ) denotes a multiple of two to the twentieth power (220 = 1,048,576) as defined by the International Electrotechnical Commission (IEC). See also "megabinary."
mebinThe adjective and noun "mebin" means "two to the twentieth power (220 = 1,048,576)." See also "megabinary" and "mebi-."
mega-The metric prefix "mega-" (prefix symbol: M- ) denotes a multiple of one million (106 = 1E+06 = 1,000,000) as defined by Le Système International d'Unités (SI).
megabinaryThe adjective "megabinary" means "two to the twentieth power (220 = 1,048,576)." See also binary prefix "mebi-" and compound binary prefix symbol "Mi-."
Mi-The compound binary prefix symbol Mi- (binary prefix: "mebi-" ) denotes a multiple of two to the twentieth power (220 = 1,048,576) as defined by the International Electrotechnical Commission (IEC). See also "megabinary."
micro-The metric prefix "micro-" (prefix symbol: μ- {Greek lower case letter mu} ) denotes a multiple of one one-millionth (10-6 = 1E-06 = 0.000 001) as defined by Le Système International d'Unités (SI).
milThe noun "mil" means "divided by one thousand (1/1,000 = 0.001)." In thickness measurement, a "mil" is equal to one one-thousandth of an inch or 25.400 micrometers. In angular measurement, a "mil" is equal to one sixty-four-hundredth (1/6,400) of a circle (or roughly one one-thousandth of a radian.) See also "mill."
mileThe noun "mile" literally means "one thousand (1,000) paces." An "international mile" is equal to 5,280 feet or 1,609.344 meters. A "nautical mile" is equal to 1,852 meters or approximately 6,076 feet.
millThe noun "mill" means "divided by one thousand (1/1,000 = 0.001)." In currency, a "mill" is equal to one one-thousandth of a dollar ($0.001). See also "mil."
mille-1. The numeric prefix "mille-" means "one thousand (1,000)." This prefix is derived from the Latin cardinal number "mille (ↀ or M)."
millenary1. The noun and adjective "millenary" means "a group of one thousand (1000)."
2. The noun and adjective "millenary" means "a period of one thousand (1000) years."
3. The noun and adjective "millenary" means "a one thousand (1000) year anniversary."
4. The adjective and noun "millenary" means "one thousandth (1000th) in rank or order."
millennial1. The adjective and noun "millennial" means "recurring every one thousand (1000) years."
2. The adjective and noun "millennial" means "lasting one thousand (1000) years."
3. The noun and adjective "millennial" means "a one thousand (1000) year anniversary."
millenniumThe noun and adjective "millennium" means "a period of one thousand (1000) years."
millesimalThe adjective "millesimal" means "based on the number one thousand (1000)." The SI (Le Système International d'Unités) metric system employs millesimal prefixes. See also Base Number Systems.
milli-1. The numeric prefix "milli-" means "one thousand (1,000)." This prefix is derived from the Latin cardinal number "mille (ↀ or M)."
2. The metric prefix "milli-" (prefix symbol: m- ) denotes a multiple of one one-thousandth (10-3 = 1E-03 = 0.001) as defined by Le Système International d'Unités (SI).
milliardThe noun and adjective "milliard" means "multiplied by ten to the ninth power (109 = 1E+09 = 1,000,000,000)" in the modified Chuquet number naming system.
millionThe noun and adjective "million" means "multiplied by one million (1,000,000)." See also Large Numbers.
millionth1. As part of the name of an ordinal number, the noun and adjective "millionth" means "a multiple of one million (1,000,000)."
2. As part of the name of a rational fraction, the noun and adjective "millionth" means "divided by one million (1/1,000,000 = 0.000 001)."
millipedeThe noun "millipede" literally means "having one thousand (1,000) feet." A "millipede" is "an insect of the class Diplopoda."
minorityThe noun "minority" means "less than one half of the members of a group." For example, a minority of 25 is 0 to 12 and a minority of 26 is also 0 to 12. "Minority" can also mean "an under-represented portion of a population."
minus1. The preposition "minus" (symbol: {minus sign} ) denotes either the operation of subtraction or the operation of unary negation.
2. The adjective and noun "minus" (prefix symbol: {minus sign} ) means "negative" or "less than zero (<0)." See also "Minus."
The symbol − {minus sign} is pronounced as "minus". The "minus sign" is used as a prefix to denote a negative number. As a mathematical operator, the "minus sign" represents either the operation of subtraction or the operation of unary negation. The "minus sign" is also used to denote a negative polarity or direction. See also "Minus Sign."
minuteThe noun "minute" means "divided by sixty (1/60)." In time measurement, a "minute" is "one sixtieth (1/60) of an hour" or "one one-thousand-four-hundred-fortieth (1/1,440) of a day." In angular measurement, a "minute" (suffix symbol: -′ {prime} ) is "one sixtieth (1/60) of a degree (suffix symbol: {degree symbol} )" or "one twenty-one-thousand-six-hundredth (1/21,600) of a circle."
Modified Chuquet SystemThe "modified Chuquet number naming system" or "Modified Chuquet System" is a modifcation of the "Chuquet System" that uses the suffix "-illiard" to denote a number one thousand (1000) times greater than the corresponding "Chuquet System" number with the "-illion" suffix.
Example: In the "Modified Chuquet System," one billiard = 10(6×2)+3 = 1012+3 = 1015 = 1E+15 = 1,000,000,000,000,000.
See also Number Naming Systems.
moietyThe noun "moiety" means "divided by two (1/2)."
mon-The prefix "mon-" means "one (1)."
monadThe noun and adjective "monad" means "a group with only one (1) member." See also Prefixes & Words Based On Greek Number Names.
monarchThe noun "monarch" means "one (1) person who rules alone." See also Prefixes & Words Based On Greek Number Names.
monarchyThe noun "monarchy" means "rule by only one (1) person."
mono-The prefix "mono-" means "one (1)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
monogamicThe adjective "monogamic" means "having a single (1) marriage or exclusive sexual relationship between only two (2) individuals." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
monogamousThe adjective "monogamous" means "having a single (1) marriage or exclusive sexual relationship between only two (2) individuals."
monogamouslyThe adverb "monogamously" means "maintaining a single (1) marriage or exclusive sexual relationship between only two (2) individuals."
monogamyThe noun "monogamy" means "a single (1) marriage or exclusive sexual relationship between only two (2) individuals."
monogram1. The noun and verb "monogram" means "a graphic design composed of the first (1st) character of one or more (most commonly three (3)) words or parts of a name."
2. The noun "monogram" means "a word consisting of only one (1) character."
monographThe noun and adjective "monograph" means "a scholarly book or treatise on one (1) specific subject."
monthlyThe adjective "monthly" means "recurring once (1) each month."
moreThe comparative adjective "more" means "a larger number or quantity." See usage note at "many."
mostThe superlative adjective "most" means "the largest number or quantity." See usage note at "many."
μ-The metric prefix symbol μ- {Greek lower case letter mu} (metric prefix: "micro-" ) denotes a multiple of one one-millionth (10-6 = 1E-06 = 0.000 001) as defined by Le Système International d'Unités (SI).
muchThe noun and positive adjective "much" means "a relatively large non-discrete quantity." See usage note at "many."
multi-The prefix "multi-" means "having more than one (>1)."
multiple1. The adjective "multiple" means "having more than one (>1)."
2. The noun "multiple" means "the product of a given number times an integer." See also "Multiple."
myria-The prefix "myria-" means "ten thousand (10000)." See also Numeric Prefixes Used In Chemistry.
myriadThe adjective and noun "myriad" derives from the Greek cardinal number "myriad" meaning "ten thousand (104 = 10,000)." "Myriad" can more generally mean "a large number."
myriamyriadThe adjective and noun "myriamyriad" means "one hundred million (108 = 100,000,000)."
NThe Latin letter "N" is a symbol for the logical value "no".
n-The metric prefix symbol n- (metric prefix: "nano-" ) denotes a multiple of ten to the negative ninth power (10-9 = 1E-09 = 0.000 000 001) as defined by Le Système International d'Unités (SI).
nano-The metric prefix "nano-" (prefix symbol: n- ) denotes a multiple of ten to the negative ninth power (10-9 = 1E-09 = 0.000 000 001) as defined by Le Système International d'Unités (SI).
Napier's Constant"Napier's Constant," also known as the "natural logarithmic base," (symbol: e ) is the base of the natural, hyperbolic, or Naperian logarithms. "Napier's Constant" is a transcendental number approximately 2.718 281 828 459. Scottish mathematician John Napier (1550-1617) published the first description of logarithms in 1614. See also "The Natural Logarithmic Base" and "e."
narrowlyThe adverb "narrowly" means "only slightly more than a required minimum."
naryThe archaic adjective "nary" means "not any" or "zero (0)." "Nary" is most commonly used with an indefinite article, as in "Nary a pence could be had."
natural logarithmic baseThe "natural logarithmic base," also known as "Napier's Constant," (symbol: e ) is the base of the natural, hyperbolic, or Naperian logarithms. The "natural logarithmic base" is a transcendental number approximately 2.718 281 828 459. Scottish mathematician John Napier (1550-1617) published the first description of logarithms in 1614. See also "The Natural Logarithmic Base" and "e."
natural numberA natural number is a finite positive integer, e.g., 1, 2, 3, 4, 5, etc. See also "Natural Number."
naughtThe pronoun "naught" means "zero (0)."
nea-The nonstandard prefix "nea-" denotes a multiple of ten to the twenty-seventh power (1027 = 1E+27 = 1,000,000,000,000,000,000,000,000,000).
nearlyThe adverb "nearly" means "slightly less than the specified amount."
negative1. The adjective and noun "negative" means "less than zero (<0)." A "negative" quantity is denoted with the prefix symbol {minus sign}. "Negative" has the opposite polarity, direction, or meaning of "positive." In physics, the electric charge of an electron is (arbitrarily) designated as "negative."
2. The adjective and noun "negative" is a logical value. "Negative" and "affirmative" or "negative" and "positive" are sometimes used as binary logic pairs.
nibbleIn computer terminology, the noun "nibble" means "a set of four (4) binary units having two to the fourth power (24 = 16) possible states. A single sexdecimal digit can represent the status of a nibble. A nibble is equal to four (4) bits, two (2) crumbs, or half (1/2) a byte.
nilThe noun and adjective "nil" means "zero (0)."
nineThe noun, pronoun, and adjective "nine (9)" is the standard name for "the cardinal number that follows eight (8)." "Nine" corresponds with the ordinal number "ninth (9th)." See also Number Names, Number Notation Systems, and Integer Factors.
nineteenThe noun, pronoun, and adjective "nineteen (19)" is the standard name for "the cardinal number that follows eighteen (18)." "Nineteen" corresponds with the ordinal number "nineteenth (19th)." See also Number Names, Number Notation Systems, and Integer Factors.
nineteenth1. The adjective, adverb, and noun "nineteenth (19th)" is the standard name for "the ordinal number that follows eighteenth (18th)." "Nineteenth" corresponds with the cardinal number "nineteen (19)." See also Number Names.
2. The adjective and noun "nineteenth (1/19)" means "divided by nineteen (19)."
nineteenth holeThe compound noun "nineteenth (19th) hole" means "the club house of a golf course."
nineties1. The plural noun and adjective "nineties (90s)" means "an integer multiple of ninety (90)."
2. The plural noun and adjective "nineties (90's)" means "the range of numbers at least ninety (90) but less than one hundred (100)." When referring to dates, "nineties" means "a span of ten years in which the tens (10s) digit of the year number is nine (9)."
ninetieth1. The adjective, adverb, and noun "ninetieth (90th)" is the standard name for "the ordinal number that follows eighty-ninth (89th)." "Ninetieth" corresponds with the cardinal number "ninety (90)." See also Number Names.
2. The adjective and noun "ninetieth (1/90)" means "divided by ninety (90)."
ninetyThe noun, pronoun, and adjective "ninety (90)" is the standard name for "the cardinal number that follows eighty-nine (89)." "Ninety" corresponds with the ordinal number "ninetieth (90th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-eightThe noun and adjective "ninety-eight (98)" is the standard name for "the cardinal number that follows ninety-seven (97)." "Ninety-eight" corresponds with the ordinal number "ninety-eighth (98th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-eighthThe compound adjective, adverb, and noun "ninety-eighth (98th)" is the standard name for "the ordinal number that follows ninety-seventh (97th)." "Ninety-eighth" corresponds with the cardinal number "ninety-eight (98)." See also Number Names.
ninety-fifthThe compound adjective, adverb, and noun "ninety-fifth (95th)" is the standard name for "the ordinal number that follows ninety-fourth (94th)." "Ninety-fifth" corresponds with the cardinal number "ninety-five (95)." See also Number Names.
ninety-firstThe compound adjective, adverb, and noun "ninety-first (91st)" is the standard name for "the ordinal number that follows ninetieth (90th)." "Ninety-first" corresponds with the cardinal number "ninety-one (91)." See also Number Names.
ninety-fiveThe noun and adjective "ninety-five (95)" is the standard name for "the cardinal number that follows ninety-four (94)." "Ninety-five" corresponds with the ordinal number "ninety-fifth (95th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-fourThe noun and adjective "ninety-four (94)" is the standard name for "the cardinal number that follows ninety-three (93)." "Ninety-four" corresponds with the ordinal number "ninety-fourth (94th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-fourthThe compound adjective, adverb, and noun "ninety-fourth (94th)" is the standard name for "the ordinal number that follows ninety-third (93rd or 93d)." "Ninety-fourth" corresponds with the cardinal number "ninety-four (94)." See also Number Names.
ninety-nineThe noun and adjective "ninety-nine (99)" is the standard name for "the cardinal number that follows ninety-eight (98)." "Ninety-nine" corresponds with the ordinal number "ninety-ninth (99th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-ninthThe compound adjective, adverb, and noun "ninety-ninth (99th)" is the standard name for "the ordinal number that follows ninety-eighth (98th)." "Ninety-ninth" corresponds with the cardinal number "ninety-nine (99)." See also Number Names.
ninety-oneThe noun and adjective "ninety-one (91)" is the standard name for "the cardinal number that follows ninety (90)." "Ninety-one" corresponds with the ordinal number "ninety-first (91st)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-secondThe compound adjective, adverb, and noun "ninety-second (92nd or 92d)" is the standard name for "the ordinal number that follows ninety-first (91st)." "Ninety-second" corresponds with the cardinal number "ninety-two (92)." See also Number Names.
ninety-sevenThe noun and adjective "ninety-seven (97)" is the standard name for "the cardinal number that follows ninety-six (96)." "Ninety-seven" corresponds with the ordinal number "ninety-seventh (97th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-seventhThe compound adjective, adverb, and noun "ninety-seventh (97th)" is the standard name for "the ordinal number that follows ninety-sixth (96th)." "Ninety-seventh" corresponds with the cardinal number "ninety-seven (97)." See also Number Names.
ninety-sixThe noun and adjective "ninety-six (96)" is the standard name for "the cardinal number that follows ninety-five (95)." "Ninety-six" corresponds with the ordinal number "ninety-sixth (96th)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-sixth1. The compound adjective, adverb, and noun "ninety-sixth (96th)" is the standard name for "the ordinal number that follows ninety-fifth (95th)." "Ninety-sixth" corresponds with the cardinal number "ninety-six (96)." See also Number Names.
2. The compound adjective and noun "ninety-sixth (1/96)" means "divided by ninety-six (96)."
ninety-thirdThe compound adjective, adverb, and noun "ninety-third (93rd or 93d)" is the standard name for "the ordinal number that follows ninety-second (92nd or 92d)." "Ninety-third" corresponds with the cardinal number "ninety-three (93)." See also Number Names.
ninety-threeThe noun and adjective "ninety-three (93)" is the standard name for "the cardinal number that follows ninety-two (92)." "Ninety-three" corresponds with the ordinal number "ninety-third (93rd or 93d)." See also Number Names, Number Notation Systems, and Integer Factors.
ninety-twoThe noun and adjective "ninety-two (92)" is the standard name for "the cardinal number that follows ninety-one (91)." "Ninety-two" corresponds with the ordinal number "ninety-second (92nd or 92d)." See also Number Names, Number Notation Systems, and Integer Factors.
ninth1. The adjective, adverb, and noun "ninth (9th)" is the standard name for "the ordinal number that follows eighth (8th)." "Ninth" corresponds with the cardinal number "nine (9)." See also Number Names.
2. The adjective and noun "ninth (1/9)" means "divided by nine (9)."
nixThe slang noun "nix" means "zero (0)" or "nothing." "Nix" derives from the German word "nichts" meaning "nothing."
noThe adjective, adverb, and noun "no" is a logical value. "No" and "yes" are often used as a binary logic pair.
no-The prefix "no-" means "zero (0)."
no oneThe compound pronoun "no one" means "no person" or "zero (0)."
nobodyThe pronoun "nobody" means "no person" or "zero (0)." "Nobody" is a contraction of "no body."
non-1. The prefix "non-" means "zero (0)."
nona-The numeric prefix "nona-" means "nine (9)." This prefix is derived from the Latin ordinal number "nonus (VIIII)." See also Prefixes & Words Based On Latin Number Names and Numeric Prefixes Used In Chemistry.
nonaconta-The prefix "nonaconta-" means "ninety (90)." See also Numeric Prefixes Used In Chemistry.
nonacta-The prefix "nonacta-" means "nine hundred (900)." See also Numeric Prefixes Used In Chemistry.
nonadeca-The prefix "nonadeca-" means "nineteen (19)." See also Numeric Prefixes Used In Chemistry.
nonagenarianThe noun and adjective "nonagenarian" means "between ninety (90) and one hundred (100) years of age."
nonagenaryThe adjective "nonagenary" means "having ninety (90) parts."
nonagesimalThe adjective "nonagesimal" means "based on the number ninety (90)."
nonaginta-The numeric prefix "nonaginta-" means "ninety (90)." This prefix is derived from the Latin cardinal number "nonaginta (LXXXX)."
nonagintennaryThe noun and adjective "nonagintennary" means "a group of ninety (90) or a period of ninety (90) years."
nonagintennial1. The adjective and noun "nonagintennial" means "recurring every ninety (90) years."
2. The adjective and noun "nonagintennial" means "lasting ninety (90) years."
3. The noun and adjective "nonagintennial" means "a ninety (90) year anniversary."
nonagintenniumThe noun and adjective "nonagintennium" means "a period of ninety (90) years."
nonagintillionThe noun and adjective "nonagintillion" means multiplied by 10273 in the American number naming system, but means multiplied by 10540 in the Chuquet number naming system. See also Large Numbers.
nonagonThe noun and adjective "nonagon" means "a plane figure with nine (9) straight sides." See also "enneagon."
nonaheptaconta-The prefix "nonaheptaconta-" means "seventy-nine (79)." See also Numeric Prefixes Used In Chemistry.
nonahexaconta-The prefix "nonahexaconta-" means "sixty-nine (69)." See also Numeric Prefixes Used In Chemistry.
nonaicosa-The prefix "nonaicosa-" means "twenty-nine (29)." See also Numeric Prefixes Used In Chemistry.
nonalThe adjective "nonal" means "based on the number nine (9)."
nonalia-The prefix "nonalia-" means "nine thousand (9000)." See also Numeric Prefixes Used In Chemistry.
nonanonaconta-The prefix "nonanonaconta-" means "ninety-nine (99)." See also Numeric Prefixes Used In Chemistry.
nonaoctaconta-The prefix "nonaoctaconta-" means "eighty-nine (89)." See also Numeric Prefixes Used In Chemistry.
nonapentaconta-The prefix "nonapentaconta-" means "fifty-nine (59)." See also Numeric Prefixes Used In Chemistry.
nonary1. The adjective and noun "nonary" means "ninth (9th) in order or importance."
2. The adjective "nonary" means "having nine (9) parts."
nonatetraconta-The prefix "nonatetraconta-" means "forty-nine (49)." See also Numeric Prefixes Used In Chemistry.
nonatriaconta-The prefix "nonatriaconta-" means "thirty-nine (39)." See also Numeric Prefixes Used In Chemistry.
noncupleThe verb, adjective, adverb, and noun "noncuple" means "multiply by nine (9)."
noneThe pronoun "none" means "not any" or "zero (0)." "None" is a contraction of "no one."
nonetThe noun "nonet" means "a group of nine (9) members."
nonillionThe noun and adjective "nonillion" means multiplied by 1030 in the American number naming system, but means multiplied by 1054 in the Chuquet number naming system. See also Large Numbers.
nonnegativeThe adjective "nonnegative" means "greater than or equal to zero (≥0)."
nonpositiveThe adjective "nonpositive" means "less than or equal to zero (≤0)."
nonupleThe verb, adjective, adverb, and noun "nonuple" means "multiply by nine (9)."
nonzeroThe adjective "nonzero" means "not equal to zero (≠0)."
nothingThe pronoun and noun "nothing" means "no thing" or "zero (0)." "Nothing" is a contraction of "no thing."
nought"Nought" is an alternate spelling of the pronoun "naught" which means "zero (0)."
NovemberThe month name "November" literally means "the ninth (9th) month." The Roman year began on the first (1st) day of March.
novemcentenary1. The noun and adjective "novemcentenary" means "a group of nine hundred (900)."
2. The noun and adjective "novemcentenary" means "a period of nine hundred (900) years."
3. The noun and adjective "novemcentenary" means "a nine hundred (900) year anniversary."
4. The adjective and noun "novemcentenary" means "nine hundredth (900th) in rank or order."
novemcentennial1. The adjective and noun "novemcentennial" means "recurring every nine hundred (900) years."
2. The adjective and noun "novemcentennial" means "lasting nine hundred (900) years."
3. The noun and adjective "novemcentennial" means "a nine hundred (900) year anniversary."
novemcentenniumThe noun and adjective "novemcentennium" means "a period of nine hundred (900) years."
novemdecennaryThe noun and adjective "novemdecennary" means "a group of nineteen (19) or a period of nineteen (19) years."
novemdecennial1. The adjective and noun "novemdecennial" means "recurring every nineteen (19) years."
2. The adjective and noun "novemdecennial" means "lasting nineteen (19) years."
3. The noun and adjective "novemdecennial" means "a nineteen (19) year anniversary."
novemdecenniumThe noun and adjective "novemdecennium" means "a period of nineteen (19) years."
novemdecentenary1. The noun and adjective "novemdecentenary" means "a group of one thousand nine hundred (1900)."
2. The noun and adjective "novemdecentenary" means "a period of one thousand nine hundred (1900) years."
3. The noun and adjective "novemdecentenary" means "a one thousand nine hundred (1900) year anniversary."
4. The adjective and noun "novemdecentenary" means "one thousand nine hundredth (1900th) in rank or order."
novemdecentennial1. The adjective and noun "novemdecentennial" means "recurring every one thousand nine hundred (1900) years."
2. The adjective and noun "novemdecentennial" means "lasting one thousand nine hundred (1900) years."
3. The noun and adjective "novemdecentennial" means "a one thousand nine hundred (1900) year anniversary."
novemdecentenniumThe noun and adjective "novemdecentennium" means "a period of one thousand nine hundred (1900) years."
novemdeci-The numeric prefix "novemdeci-" means "nineteen (19)." This prefix is taken from "novemdecim," a more regular form of the Latin cardinal number "undeviginti (XVIIII)" which literally means "one (1) from twenty (20)."
novemdecillionThe noun and adjective "novemdecillion" means multiplied by 1060 in the American number naming system, but means multiplied by 10114 in the Chuquet number naming system. See also Large Numbers.
novemmillenary1. The noun and adjective "novemmillenary" means "a group of nine thousand (9000)."
2. The noun and adjective "novemmillenary" means "a period of nine thousand (9000) years."
3. The noun and adjective "novemmillenary" means "a nine thousand (9000) year anniversary."
4. The adjective and noun "novemmillenary" means "nine thousandth (9000th) in rank or order."
novemmillennial1. The adjective and noun "novemmillennial" means "recurring every nine thousand (9000) years."
2. The adjective and noun "novemmillennial" means "lasting nine thousand (9000) years."
3. The noun and adjective "novemmillennial" means "a nine thousand (9000) year anniversary."
novemmillenniumThe noun and adjective "novemmillennium" means "a period of nine thousand (9000) years."
novemnonaginta-The numeric prefix "novemnonaginta-" means "ninety-nine (99)." This prefix is derived from the Latin cardinal number "novem et nonaginta (LXXXXVIIII)."
novemnonagintennaryThe noun and adjective "novemnonagintennary" means "a group of ninety-nine (99) or a period of ninety-nine (99) years."
novemnonagintennial1. The adjective and noun "novemnonagintennial" means "recurring every ninety-nine (99) years."
2. The adjective and noun "novemnonagintennial" means "lasting ninety-nine (99) years."
3. The noun and adjective "novemnonagintennial" means "a ninety-nine (99) year anniversary."
novemnonagintenniumThe noun and adjective "novemnonagintennium" means "a period of ninety-nine (99) years."
novemnonagintillionThe noun and adjective "novemnonagintillion" means multiplied by 10300 in the American number naming system, but means multiplied by 10594 in the Chuquet number naming system. See also Large Numbers.
novemoctoginta-The numeric prefix "novemoctoginta-" means "eighty-nine (89)." This prefix is derived from the Latin cardinal number "novem et octoginta (LXXXVIIII)."
novemoctogintennaryThe noun and adjective "novemoctogintennary" means "a group of eighty-nine (89) or a period of eighty-nine (89) years."
novemoctogintennial1. The adjective and noun "novemoctogintennial" means "recurring every eighty-nine (89) years."
2. The adjective and noun "novemoctogintennial" means "lasting eighty-nine (89) years."
3. The noun and adjective "novemoctogintennial" means "an eighty-nine (89) year anniversary."
novemoctogintenniumThe noun and adjective "novemoctogintennium" means "a period of eighty-nine (89) years."
novemoctogintillionThe noun and adjective "novemoctogintillion" means multiplied by 10270 in the American number naming system, but means multiplied by 10534 in the Chuquet number naming system. See also Large Numbers.
novemquadraginta-The numeric prefix "novemquadraginta-" means "forty-nine (49)." This prefix is derived from the Latin cardinal number "novem et quadraginta (XXXXVIIII)."
novemquadragintennaryThe noun and adjective "novemquadragintennary" means "a group of forty-nine (49) or a period of forty-nine (49) years."
novemquadragintennial1. The adjective and noun "novemquadragintennial" means "recurring every forty-nine (49) years."
2. The adjective and noun "novemquadragintennial" means "lasting forty-nine (49) years."
3. The noun and adjective "novemquadragintennial" means "a forty-nine (49) year anniversary."
novemquadragintenniumThe noun and adjective "novemquadragintennium" means "a period of forty-nine (49) years."
novemquadragintillionThe noun and adjective "novemquadragintillion" means multiplied by 10150 in the American number naming system, but means multiplied by 10294 in the Chuquet number naming system. See also Large Numbers.
novemquinquaginta-The numeric prefix "novemquinquaginta-" means "fifty-nine (59)." This prefix is derived from the Latin cardinal number "novem et quinquaginta (LVIIII)."
novemquinquagintennaryThe noun and adjective "novemquinquagintennary" means "a group of fifty-nine (59) or a period of fifty-nine (59) years."
novemquinquagintennial1. The adjective and noun "novemquinquagintennial" means "recurring every fifty-nine (59) years."
2. The adjective and noun "novemquinquagintennial" means "lasting fifty-nine (59) years."
3. The noun and adjective "novemquinquagintennial" means "a fifty-nine (59) year anniversary."
novemquinquagintenniumThe noun and adjective "novemquinquagintennium" means "a period of fifty-nine (59) years."
novemquinquagintillionThe noun and adjective "novemquinquagintillion" means multiplied by 10180 in the American number naming system, but means multiplied by 10354 in the Chuquet number naming system. See also Large Numbers.
novemseptuaginta-The numeric prefix "novemseptuaginta-" means "seventy-nine (79)." This prefix is derived from the Latin cardinal number "novem et septuaginta (LXXVIIII)."
novemseptuagintennaryThe noun and adjective "novemseptuagintennary" means "a group of seventy-nine (79) or a period of seventy-nine (79) years."
novemseptuagintennial1. The adjective and noun "novemseptuagintennial" means "recurring every seventy-nine (79) years."
2. The adjective and noun "novemseptuagintennial" means "lasting seventy-nine (79) years."
3. The noun and adjective "novemseptuagintennial" means "a seventy-nine (79) year anniversary."
novemseptuagintenniumThe noun and adjective "novemseptuagintennium" means "a period of seventy-nine (79) years."
novemseptuagintillionThe noun and adjective "novemseptuagintillion" means multiplied by 10240 in the American number naming system, but means multiplied by 10474 in the Chuquet number naming system. See also Large Numbers.
novemsexaginta-The numeric prefix "novemsexaginta-" means "sixty-nine (69)." This prefix is derived from the Latin cardinal number "novem et sexaginta (LXVIIII)."
novemsexagintennaryThe noun and adjective "novemsexagintennary" means "a group of sixty-nine (69) or a period of sixty-nine (69) years."
novemsexagintennial1. The adjective and noun "novemsexagintennial" means "recurring every sixty-nine (69) years."
2. The adjective and noun "novemsexagintennial" means "lasting sixty-nine (69) years."
3. The noun and adjective "novemsexagintennial" means "a sixty-nine (69) year anniversary."
novemsexagintenniumThe noun and adjective "novemsexagintennium" means "a period of sixty-nine (69) years."
novemsexagintillionThe noun and adjective "novemsexagintillion" means multiplied by 10210 in the American number naming system, but means multiplied by 10414 in the Chuquet number naming system. See also Large Numbers.
novemtriginta-The numeric prefix "novemtriginta-" means "thirty-nine (39)." This prefix is derived from the Latin cardinal number "novem et triginta (XXXVIIII)."
novemtrigintacentenary1. The noun and adjective "novemtrigintacentenary" means "a group of three thousand nine hundred (3900)."
2. The noun and adjective "novemtrigintacentenary" means "a period of three thousand nine hundred (3900) years."
3. The noun and adjective "novemtrigintacentenary" means "a three thousand nine hundred (3900) year anniversary."
4. The adjective and noun "novemtrigintacentenary" means "three thousand nine hundredth (3900th) in rank or order."
novemtrigintacentennial1. The adjective and noun "novemtrigintacentennial" means "recurring every three thousand nine hundred (3900) years."
2. The adjective and noun "novemtrigintacentennial" means "lasting three thousand nine hundred (3900) years."
3. The noun and adjective "novemtrigintacentennial" means "a three thousand nine hundred (3900) year anniversary."
novemtrigintacentenniumThe noun and adjective "novemtrigintacentennium" means "a period of three thousand nine hundred (3900) years."
novemtrigintennaryThe noun and adjective "novemtrigintennary" means "a group of thirty-nine (39) or a period of thirty-nine (39) years."
novemtrigintennial1. The adjective and noun "novemtrigintennial" means "recurring every thirty-nine (39) years."
2. The adjective and noun "novemtrigintennial" means "lasting thirty-nine (39) years."
3. The noun and adjective "novemtrigintennial" means "a thirty-nine (39) year anniversary."
novemtrigintenniumThe noun and adjective "novemtrigintennium" means "a period of thirty-nine (39) years."
novemtrigintillionThe noun and adjective "novemtrigintillion" means multiplied by 10120 in the American number naming system, but means multiplied by 10234 in the Chuquet number naming system. See also Large Numbers.
novemvigintennaryThe noun and adjective "novemvigintennary" means "a group of twenty-nine (29) or a period of twenty-nine (29) years."
novemvigintennial1. The adjective and noun "novemvigintennial" means "recurring every twenty-nine (29) years."
2. The adjective and noun "novemvigintennial" means "lasting twenty-nine (29) years."
3. The noun and adjective "novemvigintennial" means "a twenty-nine (29) year anniversary."
novemvigintenniumThe noun and adjective "novemvigintennium" means "a period of twenty-nine (29) years."
novemviginti-The numeric prefix "novemviginti-" means "twenty-nine (29)." This prefix is derived from the Latin cardinal number "novem et viginti (XXVIIII)."
novemviginticentenary1. The noun and adjective "novemviginticentenary" means "a group of two thousand nine hundred (2900)."
2. The noun and adjective "novemviginticentenary" means "a period of two thousand nine hundred (2900) years."
3. The noun and adjective "novemviginticentenary" means "a two thousand nine hundred (2900) year anniversary."
4. The adjective and noun "novemviginticentenary" means "two thousand nine hundredth (2900th) in rank or order."
novemviginticentennial1. The adjective and noun "novemviginticentennial" means "recurring every two thousand nine hundred (2900) years."
2. The adjective and noun "novemviginticentennial" means "lasting two thousand nine hundred (2900) years."
3. The noun and adjective "novemviginticentennial" means "a two thousand nine hundred (2900) year anniversary."
novemviginticentenniumThe noun and adjective "novemviginticentennium" means "a period of two thousand nine hundred (2900) years."
novemvigintillionThe noun and adjective "novemvigintillion" means multiplied by 1090 in the American number naming system, but means multiplied by 10174 in the Chuquet number naming system. See also Large Numbers.
novenaThe noun "novena" means "a nine (9) day period of prayer."
novennaryThe noun and adjective "novennary" means "a group of nine (9) or a period of nine (9) years."
novennial1. The adjective and noun "novennial" means "recurring every nine (9) years."
2. The adjective and noun "novennial" means "lasting nine (9) years."
3. The noun and adjective "novennial" means "a nine (9) year anniversary."
novenniumThe noun and adjective "novennium" means "a period of nine (9) years."
null1. The noun and adjective "null" means "zero (0)", "empty", or "invalid."
2. The verb "null" means "to set to zero (0)."
number1. The noun and adjective "number" means "an abstract dimensionless quantity." See also "algebraic number," "cardinal number," "complex number," "decimal number," "imaginary number," "integer number," "irrational number," "natural number," "ordinal number," "prime number," "rational number," "real number," "transcendental number," "whole number," and Number.
2. The noun and adjective "number" means "a symbol, series of symbols, word, or series of words used to represent a "number." See also "numeral," "digit," and Number Names.
3. The noun and adjective "number" means "a series of "digits or alphanumeric characters."
4. The noun and adjective "number" means "the total number of individuals of discrete objects in a set." See also "count."
5. The noun and adjective "number" means "a significantly large number of individuals of discrete objects."
6. The verb "number" means "to assign a number to an object." Most commonly "number" means "to count." See also "enumerate."
7. The verb "number" means "to determine the number of objects in a set." See also "count."
numberlessThe adjective "numberless" means "a very large number of individuals or discrete objects."
numeracyThe noun "numeracy" means "the capacity to understand and work with numbers."
numeralThe noun and adjective "numeral" means "a single symbol or series of symbols used to represent a number." There are many modern and historical systems of numerals and number notation. In modern positional number notation systems, the Indio-Arabic numerals 0 through 9 followed by the English letters A through Z are used to represent the integers zero (0) through thirty-five (35). Roman numerals and Greek numerals are also commonly used to represent numbers.
numerateThe adjective "numerate" means "having the capacity to understand and work with numbers."
numericThe adjective and noun "numeric" means "pertaining to numbers."
numericalThe adjective "numerical" means "of or relating to numbers."
numerousThe adjective "numerous" means "a relatively large number of individuals or discrete objects."
oct-The numeric prefix "oct-" means "eight (8)." This prefix is derived from the Latin cardinal number "octo (VIII)."
octa-The prefix "octa-" means "eight (8)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
octaconta-The prefix "octaconta-" means "eighty (80)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
octacontadThe noun and adjective "octacontad" means "a group of eighty (80) members." See also Prefixes & Words Based On Greek Number Names.
octacontadi-The prefix "octacontadi-" means "eighty-two (82)." "Octacontadi-" is an alternate form of the prefix "octacontakaidi-." See also Prefixes & Words Based On Greek Number Names.
octacontaennea-The prefix "octacontaennea-" means "eighty-nine (89)." "Octacontaennea-" is an alternate form of the prefix "octacontakaiennea-."
octacontagonThe noun and adjective "octacontagon" means "a plain figure with eighty (80) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontagramThe noun and adjective "octacontagram" means "an interconnected star figure with eighty (80) points formed by stellating a octacontagon." See also Prefixes & Words Based On Greek Number Names.
octacontahedronThe noun and adjective "octacontahedron" means "a solid figure with eighty (80) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontahena-The prefix "octacontahena-" means "eighty-one (81)." "Octacontahena-" is an alternate form of the prefix "octacontakaihena-." See also Prefixes & Words Based On Greek Number Names.
octacontahepta-The prefix "octacontahepta-" means "eighty-seven (87)." "Octacontahepta-" is an alternate form of the prefix "octacontakaihepta-."
octacontahexa-The prefix "octacontahexa-" means "eighty-six (86)." "Octacontahexa-" is an alternate form of the prefix "octacontakaihexa-."
octacontakaidi-The prefix "octacontakaidi-" means "eighty-two (82)." See also Prefixes & Words Based On Greek Number Names.
octacontakaidigonThe noun and adjective "octacontakaidigon" means "a plain figure with eighty-two (82) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaidigramThe noun and adjective "octacontakaidigram" means "an interconnected star figure with eighty-two (82) points formed by stellating a octacontakaidigon." See also Prefixes & Words Based On Greek Number Names.
octacontakaidihedronThe noun and adjective "octacontakaidihedron" means "a solid figure with eighty-two (82) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaidyadThe noun and adjective "octacontakaidyad" means "a group of eighty-two (82) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaiennea-The prefix "octacontakaiennea-" means "eighty-nine (89)." See also Prefixes & Words Based On Greek Number Names.
octacontakaienneadThe noun and adjective "octacontakaiennead" means "a group of eighty-nine (89) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaienneagonThe noun and adjective "octacontakaienneagon" means "a plain figure with eighty-nine (89) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaienneagramThe noun and adjective "octacontakaienneagram" means "an interconnected star figure with eighty-nine (89) points formed by stellating a octacontakaienneagon." See also Prefixes & Words Based On Greek Number Names.
octacontakaienneahedronThe noun and adjective "octacontakaienneahedron" means "a solid figure with eighty-nine (89) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaihena-The prefix "octacontakaihena-" means "eighty-one (81)." See also Prefixes & Words Based On Greek Number Names.
octacontakaihenadThe noun and adjective "octacontakaihenad" means "a group of eighty-one (81) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaihenagonThe noun and adjective "octacontakaihenagon" means "a plain figure with eighty-one (81) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaihenagramThe noun and adjective "octacontakaihenagram" means "an interconnected star figure with eighty-one (81) points formed by stellating a octacontakaihenagon." See also Prefixes & Words Based On Greek Number Names.
octacontakaihenahedronThe noun and adjective "octacontakaihenahedron" means "a solid figure with eighty-one (81) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaihepta-The prefix "octacontakaihepta-" means "eighty-seven (87)." See also Prefixes & Words Based On Greek Number Names.
octacontakaiheptadThe noun and adjective "octacontakaiheptad" means "a group of eighty-seven (87) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaiheptagonThe noun and adjective "octacontakaiheptagon" means "a plain figure with eighty-seven (87) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaiheptagramThe noun and adjective "octacontakaiheptagram" means "an interconnected star figure with eighty-seven (87) points formed by stellating a octacontakaiheptagon." See also Prefixes & Words Based On Greek Number Names.
octacontakaiheptahedronThe noun and adjective "octacontakaiheptahedron" means "a solid figure with eighty-seven (87) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaihexa-The prefix "octacontakaihexa-" means "eighty-six (86)." See also Prefixes & Words Based On Greek Number Names.
octacontakaihexadThe noun and adjective "octacontakaihexad" means "a group of eighty-six (86) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaihexagonThe noun and adjective "octacontakaihexagon" means "a plain figure with eighty-six (86) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaihexagramThe noun and adjective "octacontakaihexagram" means "an interconnected star figure with eighty-six (86) points formed by stellating a octacontakaihexagon." See also Prefixes & Words Based On Greek Number Names.
octacontakaihexahedronThe noun and adjective "octacontakaihexahedron" means "a solid figure with eighty-six (86) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaiocta-The prefix "octacontakaiocta-" means "eighty-eight (88)." See also Prefixes & Words Based On Greek Number Names.
octacontakaioctadThe noun and adjective "octacontakaioctad" means "a group of eighty-eight (88) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaioctagonThe noun and adjective "octacontakaioctagon" means "a plain figure with eighty-eight (88) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaioctagramThe noun and adjective "octacontakaioctagram" means "an interconnected star figure with eighty-eight (88) points formed by stellating a octacontakaioctagon." See also Prefixes & Words Based On Greek Number Names.
octacontakaioctahedronThe noun and adjective "octacontakaioctahedron" means "a solid figure with eighty-eight (88) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaipenta-The prefix "octacontakaipenta-" means "eighty-five (85)." See also Prefixes & Words Based On Greek Number Names.
octacontakaipentadThe noun and adjective "octacontakaipentad" means "a group of eighty-five (85) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaipentagonThe noun and adjective "octacontakaipentagon" means "a plain figure with eighty-five (85) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaipentagramThe noun and adjective "octacontakaipentagram" means "an interconnected star figure with eighty-five (85) points formed by stellating a octacontakaipentagon." See also Prefixes & Words Based On Greek Number Names.
octacontakaipentahedronThe noun and adjective "octacontakaipentahedron" means "a solid figure with eighty-five (85) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaitetra-The prefix "octacontakaitetra-" means "eighty-four (84)." See also Prefixes & Words Based On Greek Number Names.
octacontakaitetradThe noun and adjective "octacontakaitetrad" means "a group of eighty-four (84) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaitetragonThe noun and adjective "octacontakaitetragon" means "a plain figure with eighty-four (84) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaitetragramThe noun and adjective "octacontakaitetragram" means "an interconnected star figure with eighty-four (84) points formed by stellating a octacontakaitetragon." See also Prefixes & Words Based On Greek Number Names.
octacontakaitetrahedronThe noun and adjective "octacontakaitetrahedron" means "a solid figure with eighty-four (84) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontakaitri-The prefix "octacontakaitri-" means "eighty-three (83)." See also Prefixes & Words Based On Greek Number Names.
octacontakaitriadThe noun and adjective "octacontakaitriad" means "a group of eighty-three (83) members." See also Prefixes & Words Based On Greek Number Names.
octacontakaitrigonThe noun and adjective "octacontakaitrigon" means "a plain figure with eighty-three (83) straight sides." See also Prefixes & Words Based On Greek Number Names.
octacontakaitrigramThe noun and adjective "octacontakaitrigram" means "an interconnected star figure with eighty-three (83) points formed by stellating a octacontakaitrigon." See also Prefixes & Words Based On Greek Number Names.
octacontakaitrihedronThe noun and adjective "octacontakaitrihedron" means "a solid figure with eighty-three (83) planar faces." See also Prefixes & Words Based On Greek Number Names.
octacontaocta-The prefix "octacontaocta-" means "eighty-eight (88)." "Octacontaocta-" is an alternate form of the prefix "octacontakaiocta-." See also Prefixes & Words Based On Greek Number Names.
octacontapenta-The prefix "octacontapenta-" means "eighty-five (85)." "Octacontapenta-" is an alternate form of the prefix "octacontakaipenta-."
octacontatetra-The prefix "octacontatetra-" means "eighty-four (84)." "Octacontatetra-" is an alternate form of the prefix "octacontakaitetra-."
octacontatri-The prefix "octacontatri-" means "eighty-three (83)." "Octacontatri-" is an alternate form of the prefix "octacontakaitri-."
octacta-The prefix "octacta-" means "eight hundred (800)." See also Numeric Prefixes Used In Chemistry.
octadThe noun and adjective "octad" means "a group of eight (8) members." See also Prefixes & Words Based On Greek Number Names.
octadeca-The prefix "octadeca-" means "eighteen (18)." See also Numeric Prefixes Used In Chemistry.
octagonThe noun and adjective "octagon" means "a plain figure with eight (8) straight sides." See also Prefixes & Words Based On Greek Number Names.
octagram1. The noun and adjective "octagram" means "an interconnected star figure with eight (8) points formed by stellating a octagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "octagram" means "a word or character sequence consisting of eight (8) characters."
octahedronThe noun and adjective "octahedron" means "a solid figure with eight (8) planar faces." See also Prefixes & Words Based On Greek Number Names.
octaheptaconta-The prefix "octaheptaconta-" means "seventy-eight (78)." See also Numeric Prefixes Used In Chemistry.
octahexaconta-The prefix "octahexaconta-" means "sixty-eight (68)." See also Numeric Prefixes Used In Chemistry.
octaicosa-The prefix "octaicosa-" means "twenty-eight (28)." See also Numeric Prefixes Used In Chemistry.
octakaideca-The prefix "octakaideca-" means "eighteen (18)." See also Prefixes & Words Based On Greek Number Names.
octakaidecadThe noun and adjective "octakaidecad" means "a group of eighteen (18) members." See also Prefixes & Words Based On Greek Number Names.
octakaidecagonThe noun and adjective "octakaidecagon" means "a plain figure with eighteen (18) straight sides." See also Prefixes & Words Based On Greek Number Names.
octakaidecagramThe noun and adjective "octakaidecagram" means "an interconnected star figure with eighteen (18) points formed by stellating a octakaidecagon." See also Prefixes & Words Based On Greek Number Names.
octakaidecahedronThe noun and adjective "octakaidecahedron" means "a solid figure with eighteen (18) planar faces." See also Prefixes & Words Based On Greek Number Names.
octalThe adjective "octal" means "based on the number eight (8)." See also base eight and Base Number Notation. See also Prefixes & Words Based On Greek Number Names.
octalia-The prefix "octalia-" means "eight thousand (8000)." See also Numeric Prefixes Used In Chemistry.
octameterThe noun "octameter" means "a verse consisting of eight (8) metrical feet."
octangleThe noun "octangle" means "a plane figure with eight (8) vertices."
octanonaconta-The prefix "octanonaconta-" means "ninety-eight (98)." See also Numeric Prefixes Used In Chemistry.
octaoctaconta-The prefix "octaoctaconta-" means "eighty-eight (88)." See also Numeric Prefixes Used In Chemistry.
octapentaconta-The prefix "octapentaconta-" means "fifty-eight (58)." See also Numeric Prefixes Used In Chemistry.
octatetraconta-The prefix "octatetraconta-" means "forty-eight (48)." See also Numeric Prefixes Used In Chemistry.
octatriaconta-The prefix "octatriaconta-" means "thirty-eight (38)." See also Numeric Prefixes Used In Chemistry.
octavalThe adjective "octaval" means "based on the number eight (8)."
octave1. The noun "octave" means "a set of eight (8)."
2. The noun "octave" means "a religious observance of eight (8) days beginning with a feast day."
3. The noun "octave" means "a stanza of eight (8) lines."
4. The noun and adjective "octave" means "a frequency ratio of two (2)."
octavoThe noun "octavo (8vo)" means "a book with leaves printed on one eighth (1/8) of the printer sheet."
octennaryThe noun and adjective "octennary" means "a group of eight (8) or a period of eight (8) years."
octennial1. The adjective and noun "octennial" means "recurring every eight (8) years."
2. The adjective and noun "octennial" means "lasting eight (8) years."
3. The noun and adjective "octennial" means "an eight (8) year anniversary."
octenniumThe noun and adjective "octennium" means "a period of eight (8) years."
octetThe noun "octet" means "a group of eight (8) members."
octilateralThe adjective "octilateral" means "having eight (8) sides."
octillionThe noun and adjective "octillion" means multiplied by 1027 in the American number naming system, but means multiplied by 1048 in the Chuquet number naming system. See also Large Numbers.
OctoberThe month name "October" literally means "the eighth (8th) month." The Roman year began on the first (1st) day of March.
octocentenary1. The noun and adjective "octocentenary" means "a group of eight hundred (800)."
2. The noun and adjective "octocentenary" means "a period of eight hundred (800) years."
3. The noun and adjective "octocentenary" means "an eight hundred (800) year anniversary."
4. The adjective and noun "octocentenary" means "eight hundredth (800th) in rank or order."
octocentennial1. The adjective and noun "octocentennial" means "recurring every eight hundred (800) years."
2. The adjective and noun "octocentennial" means "lasting eight hundred (800) years."
3. The noun and adjective "octocentennial" means "an eight hundred (800) year anniversary."
octocentenniumThe noun and adjective "octocentennium" means "a period of eight hundred (800) years."
octodecennaryThe noun and adjective "octodecennary" means "a group of eighteen (18) or a period of eighteen (18) years."
octodecennial1. The adjective and noun "octodecennial" means "recurring every eighteen (18) years."
2. The adjective and noun "octodecennial" means "lasting eighteen (18) years."
3. The noun and adjective "octodecennial" means "an eighteen (18) year anniversary."
octodecenniumThe noun and adjective "octodecennium" means "a period of eighteen (18) years."
octodecentenary1. The noun and adjective "octodecentenary" means "a group of one thousand eight hundred (1800)."
2. The noun and adjective "octodecentenary" means "a period of one thousand eight hundred (1800) years."
3. The noun and adjective "octodecentenary" means "a one thousand eight hundred (1800) year anniversary."
4. The adjective and noun "octodecentenary" means "one thousand eight hundredth (1800th) in rank or order."
octodecentennial1. The adjective and noun "octodecentennial" means "recurring every one thousand eight hundred (1800) years."
2. The adjective and noun "octodecentennial" means "lasting one thousand eight hundred (1800) years."
3. The noun and adjective "octodecentennial" means "a one thousand eight hundred (1800) year anniversary."
octodecentenniumThe noun and adjective "octodecentennium" means "a period of one thousand eight hundred (1800) years."
octodeci-The numeric prefix "octodeci-" means "eighteen (18)." This prefix is taken from "octodecim," a more regular form of the Latin cardinal number "duodeviginti (XVIII)" which literally means "two (2) from twenty (20)."
octodecicycleThe noun, adjective, and verb "octodecicycle" means "having eighteen (18) wheels." See also "eighteen-wheeler (18-wheeler)" and "semi."
octodecillionThe noun and adjective "octodecillion" means multiplied by 1057 in the American number naming system, but means multiplied by 10108 in the Chuquet number naming system. See also Large Numbers.
octogenarianThe noun and adjective "octogenarian" means "between eighty (80) and ninety (90) years of age."
octogenaryThe adjective "octogenary" means "having eighty (80) parts."
octogesimalThe adjective "octogesimal" means "based on the number eighty (80)."
octoginta-The numeric prefix "octoginta-" means "eighty (80)." This prefix is derived from the Latin cardinal number "octoginta (LXXX)."
octogintennaryThe noun and adjective "octogintennary" means "a group of eighty (80) or a period of eighty (80) years."
octogintennial1. The adjective and noun "octogintennial" means "recurring every eighty (80) years."
2. The adjective and noun "octogintennial" means "lasting eighty (80) years."
3. The noun and adjective "octogintennial" means "an eighty (80) year anniversary."
octogintenniumThe noun and adjective "octogintennium" means "a period of eighty (80) years."
octogintillionThe noun and adjective "octogintillion" means multiplied by 10243 in the American number naming system, but means multiplied by 10480 in the Chuquet number naming system. See also Large Numbers.
octohedronThe noun "octohedron" means "a solid figure with eight (8) faces."
octomillenary1. The noun and adjective "octomillenary" means "a group of eight thousand (8000)."
2. The noun and adjective "octomillenary" means "a period of eight thousand (8000) years."
3. The noun and adjective "octomillenary" means "an eight thousand (8000) year anniversary."
4. The adjective and noun "octomillenary" means "eight thousandth (8000th) in rank or order."
octomillennial1. The adjective and noun "octomillennial" means "recurring every eight thousand (8000) years."
2. The adjective and noun "octomillennial" means "lasting eight thousand (8000) years."
3. The noun and adjective "octomillennial" means "an eight thousand (8000) year anniversary."
octomillenniumThe noun and adjective "octomillennium" means "a period of eight thousand (8000) years."
octonary1. The adjective and noun "octonary" means "eighth (8th) in order or importance."
2. The adjective "octonary" means "having eight (8) parts."
octononaginta-The numeric prefix "octononaginta-" means "ninety-eight (98)." This prefix is derived from the Latin cardinal number "octo et nonaginta (LXXXXVIII)."
octononagintennaryThe noun and adjective "octononagintennary" means "a group of ninety-eight (98) or a period of ninety-eight (98) years."
octononagintennial1. The adjective and noun "octononagintennial" means "recurring every ninety-eight (98) years."
2. The adjective and noun "octononagintennial" means "lasting ninety-eight (98) years."
3. The noun and adjective "octononagintennial" means "a ninety-eight (98) year anniversary."
octononagintenniumThe noun and adjective "octononagintennium" means "a period of ninety-eight (98) years."
octononagintillionThe noun and adjective "octononagintillion" means multiplied by 10297 in the American number naming system, but means multiplied by 10588 in the Chuquet number naming system. See also Large Numbers.
octooctoginta-The numeric prefix "octooctoginta-" means "eighty-eight (88)." This prefix is derived from the Latin cardinal number "octo et octoginta (LXXXVIII)."
octooctogintennaryThe noun and adjective "octooctogintennary" means "a group of eighty-eight (88) or a period of eighty-eight (88) years."
octooctogintennial1. The adjective and noun "octooctogintennial" means "recurring every eighty-eight (88) years."
2. The adjective and noun "octooctogintennial" means "lasting eighty-eight (88) years."
3. The noun and adjective "octooctogintennial" means "an eighty-eight (88) year anniversary."
octooctogintenniumThe noun and adjective "octooctogintennium" means "a period of eighty-eight (88) years."
octooctogintillionThe noun and adjective "octooctogintillion" means multiplied by 10267 in the American number naming system, but means multiplied by 10528 in the Chuquet number naming system. See also Large Numbers.
octoquadraginta-The numeric prefix "octoquadraginta-" means "forty-eight (48)." This prefix is derived from the Latin cardinal number "octo et quadraginta (XXXXVIII)."
octoquadragintennaryThe noun and adjective "octoquadragintennary" means "a group of forty-eight (48) or a period of forty-eight (48) years."
octoquadragintennial1. The adjective and noun "octoquadragintennial" means "recurring every forty-eight (48) years."
2. The adjective and noun "octoquadragintennial" means "lasting forty-eight (48) years."
3. The noun and adjective "octoquadragintennial" means "a forty-eight (48) year anniversary."
octoquadragintenniumThe noun and adjective "octoquadragintennium" means "a period of forty-eight (48) years."
octoquadragintillionThe noun and adjective "octoquadragintillion" means multiplied by 10147 in the American number naming system, but means multiplied by 10288 in the Chuquet number naming system. See also Large Numbers.
octoquinquaginta-The numeric prefix "octoquinquaginta-" means "fifty-eight (58)." This prefix is derived from the Latin cardinal number "octo et quinquaginta (LVIII)."
octoquinquagintennaryThe noun and adjective "octoquinquagintennary" means "a group of fifty-eight (58) or a period of fifty-eight (58) years."
octoquinquagintennial1. The adjective and noun "octoquinquagintennial" means "recurring every fifty-eight (58) years."
2. The adjective and noun "octoquinquagintennial" means "lasting fifty-eight (58) years."
3. The noun and adjective "octoquinquagintennial" means "a fifty-eight (58) year anniversary."
octoquinquagintenniumThe noun and adjective "octoquinquagintennium" means "a period of fifty-eight (58) years."
octoquinquagintillionThe noun and adjective "octoquinquagintillion" means multiplied by 10177 in the American number naming system, but means multiplied by 10348 in the Chuquet number naming system. See also Large Numbers.
octoseptuaginta-The numeric prefix "octoseptuaginta-" means "seventy-eight (78)." This prefix is derived from the Latin cardinal number "octo et septuaginta (LXXVIII)."
octoseptuagintennaryThe noun and adjective "octoseptuagintennary" means "a group of seventy-eight (78) or a period of seventy-eight (78) years."
octoseptuagintennial1. The adjective and noun "octoseptuagintennial" means "recurring every seventy-eight (78) years."
2. The adjective and noun "octoseptuagintennial" means "lasting seventy-eight (78) years."
3. The noun and adjective "octoseptuagintennial" means "a seventy-eight (78) year anniversary."
octoseptuagintenniumThe noun and adjective "octoseptuagintennium" means "a period of seventy-eight (78) years."
octoseptuagintillionThe noun and adjective "octoseptuagintillion" means multiplied by 10237 in the American number naming system, but means multiplied by 10468 in the Chuquet number naming system. See also Large Numbers.
octosexaginta-The numeric prefix "octosexaginta-" means "sixty-eight (68)." This prefix is derived from the Latin cardinal number "octo et sexaginta (LXVIII)."
octosexagintennaryThe noun and adjective "octosexagintennary" means "a group of sixty-eight (68) or a period of sixty-eight (68) years."
octosexagintennial1. The adjective and noun "octosexagintennial" means "recurring every sixty-eight (68) years."
2. The adjective and noun "octosexagintennial" means "lasting sixty-eight (68) years."
3. The noun and adjective "octosexagintennial" means "a sixty-eight (68) year anniversary."
octosexagintenniumThe noun and adjective "octosexagintennium" means "a period of sixty-eight (68) years."
octosexagintillionThe noun and adjective "octosexagintillion" means multiplied by 10207 in the American number naming system, but means multiplied by 10408 in the Chuquet number naming system. See also Large Numbers.
octotriginta-The numeric prefix "octotriginta-" means "thirty-eight (38)." This prefix is derived from the Latin cardinal number "octo et triginta (XXXVIII)."
octotrigintacentenary1. The noun and adjective "octotrigintacentenary" means "a group of three thousand eight hundred (3800)."
2. The noun and adjective "octotrigintacentenary" means "a period of three thousand eight hundred (3800) years."
3. The noun and adjective "octotrigintacentenary" means "a three thousand eight hundred (3800) year anniversary."
4. The adjective and noun "octotrigintacentenary" means "three thousand eight hundredth (3800th) in rank or order."
octotrigintacentennial1. The adjective and noun "octotrigintacentennial" means "recurring every three thousand eight hundred (3800) years."
2. The adjective and noun "octotrigintacentennial" means "lasting three thousand eight hundred (3800) years."
3. The noun and adjective "octotrigintacentennial" means "a three thousand eight hundred (3800) year anniversary."
octotrigintacentenniumThe noun and adjective "octotrigintacentennium" means "a period of three thousand eight hundred (3800) years."
octotrigintennaryThe noun and adjective "octotrigintennary" means "a group of thirty-eight (38) or a period of thirty-eight (38) years."
octotrigintennial1. The adjective and noun "octotrigintennial" means "recurring every thirty-eight (38) years."
2. The adjective and noun "octotrigintennial" means "lasting thirty-eight (38) years."
3. The noun and adjective "octotrigintennial" means "a thirty-eight (38) year anniversary."
octotrigintenniumThe noun and adjective "octotrigintennium" means "a period of thirty-eight (38) years."
octotrigintillionThe noun and adjective "octotrigintillion" means multiplied by 10117 in the American number naming system, but means multiplied by 10228 in the Chuquet number naming system. See also Large Numbers.
octovigintennaryThe noun and adjective "octovigintennary" means "a group of twenty-eight (28) or a period of twenty-eight (28) years."
octovigintennial1. The adjective and noun "octovigintennial" means "recurring every twenty-eight (28) years."
2. The adjective and noun "octovigintennial" means "lasting twenty-eight (28) years."
3. The noun and adjective "octovigintennial" means "a twenty-eight (28) year anniversary."
octovigintenniumThe noun and adjective "octovigintennium" means "a period of twenty-eight (28) years."
octoviginti-The numeric prefix "octoviginti-" means "twenty-eight (28)." This prefix is derived from the Latin cardinal number "octo et viginti (XXVIII)."
octoviginticentenary1. The noun and adjective "octoviginticentenary" means "a group of two thousand eight hundred (2800)."
2. The noun and adjective "octoviginticentenary" means "a period of two thousand eight hundred (2800) years."
3. The noun and adjective "octoviginticentenary" means "a two thousand eight hundred (2800) year anniversary."
4. The adjective and noun "octoviginticentenary" means "two thousand eight hundredth (2800th) in rank or order."
octoviginticentennial1. The adjective and noun "octoviginticentennial" means "recurring every two thousand eight hundred (2800) years."
2. The adjective and noun "octoviginticentennial" means "lasting two thousand eight hundred (2800) years."
3. The noun and adjective "octoviginticentennial" means "a two thousand eight hundred (2800) year anniversary."
octoviginticentenniumThe noun and adjective "octoviginticentennium" means "a period of two thousand eight hundred (2800) years."
octovigintillionThe noun and adjective "octovigintillion" means multiplied by 1087 in the American number naming system, but means multiplied by 10168 in the Chuquet number naming system. See also Large Numbers.
octupleThe verb, adjective, adverb, and noun "octuple" means "multiply by eight (8)."
octupletThe noun and adjective "octuplet" means "one of eight (8) siblings born together" or "one of eight (8) very similar things."
olympiadThe noun "olympiad" means "a period of four (4) years."
onceThe adverb "once" means "one (1) time."
oneThe noun, pronoun, and adjective "one (1)" is the standard name for "the cardinal number that represents unity." "One" corresponds with the ordinal number "first (1st)." See also Number Names and Number Notation Systems.
one eighthThe compound noun, pronoun, and adjective "one eighth (1/8 = 0.125)" is the standard name for "the rational fraction equal to one (1) divided by eight (8)." "One eighth" equals "two to the negative third power (2-3 = 1/8 = 0.125)." "One eighth" is the third Eye of Horus fraction. See also Integer Powers of Two.
one fifthThe compound noun, pronoun, and adjective "one fifth (1/5 = 0.200)" is the standard name for "the rational fraction equal to one (1) divided by five (5)."
one fourthThe compound noun, pronoun, and adjective "one fourth (1/4 = 0.250)" is the standard name for "the rational fraction equal to one (1) divided by four (4)." "One fourth" equals "two to the negative second power (2-2 = 1/4 = 0.250)." "One fourth" is the second Eye of Horus fraction. See also Integer Powers of Two.
one halfThe compound noun, pronoun, and adjective "one half (1/2 = 0.500)" is the standard name for "the rational fraction equal to one (1) divided by two (2)." "One half" equals "two to the negative first power (2-1 = 1/2 = 0.500)." "One half" is the first Eye of Horus fraction. See also Integer Powers of Two.
one hundredThe compound noun, pronoun, and adjective "one hundred (100)" is the standard name for "the cardinal number that follows ninety-nine (99)." "One hundred" equals "ten to the second power (102 = 1E+02 = 100)." "One hundred" corresponds with the ordinal number "one hundredth (100th)." See also Standard Number Names, Number Notation Systems, and Integer Factors.
one hundred millionThe compound noun and adjective "one hundred million (100,000,000)" is the standard name for "the cardinal number that equals ten to the eighth power (108 = 1E+08 = 100,000,000)." See also Standard Number Names.
one hundred thousandThe compound noun and adjective "one hundred thousand (100,000)" is the standard name for "the cardinal number that equals ten to the fifth power (105 = 1E+05 = 100,000)." See also Standard Number Names.
one hundredthThe compound adjective, adverb, and noun "one hundredth (100th)" is the standard name for "the ordinal number that follows ninety-ninth (99th)." "One hundredth" corresponds with the cardinal number "one hundred (100)." See also Standard Number Names.
one millionThe compound noun and adjective "one million (1,000,000)" is the standard name for "the cardinal number that equals ten to the sixth power (106 = 1E+06 = 1,000,000)." See also Number Names and Integer Powers of One Thousand.
one ninthThe compound noun, pronoun, and adjective "one ninth (1/9)" is the standard name for "the rational fraction equal to one (1) divided by nine (9)."
one one-hundred-millionthThe compound noun and adjective "one one-hundred-millionth (1/100,000,000 = 0.000 000 010)" is the standard name for "the rational fraction that equals "ten to the negative eighth power (10-8 = 1E-08 = 0.000 000 010)." See also Number Names.
one one-hundredthThe compound noun and adjective "one one-hundredth (1/100 = 0.010)" is the standard name for "the rational fraction that equals "ten to the negative second power (10-2 = 1E-02 = 0.010)." See also Number Names.
one one-hundred-thousandthThe compound noun and adjective "one one-hundred-thousandth (1/100,000 = 0.000 010)" is the standard name for "the rational fraction that equals "ten to the negative fifth power (10-5 = 1E-05 = 0.000 010)." See also Number Names.
one one-millionthThe compound noun and adjective "one one-millionth (1/1,000,000 = 0.000 001)" is the standard name for "the rational fraction that equals "ten to the negative sixth power (10-6 = 1E-06 = 0.000 001)." See also Number Names and Integer Powers of One Thousand.
one one-thousandthThe compound noun and adjective "one one-thousandth (1/1,000 = 0.001)" is the standard name for "the rational fraction that equals "ten to the negative third power (10-3 = 1E-03 = 0.001)." See also Number Names and Integer Powers of One Thousand.
one quarterThe compound noun, pronoun, and adjective "one quarter" is an alternate name for "the rational fraction one fourth (1/4 = 0.250)." See also Integer Powers of Two.
one seventhThe compound noun, pronoun, and adjective "one seventh (1/7)" is the standard name for "the rational fraction equal to one (1) divided by seven (7)."
one sixteenthThe compound noun, pronoun, and adjective "one sixteenth (1/16 = 0.062 500)" is the standard name for "the rational fraction equal to one (1) divided by sixteen (16)." "One sixteenth" equals "two to the negative fourth power (2-4 = 1/16 = 0.062 500)." "One sixteenth" is the fourth Eye of Horus fraction. See also Integer Powers of Two.
one sixthThe compound noun, pronoun, and adjective "one sixth (1/6)" is the standard name for "the rational fraction equal to one (1) divided by six (6)."
one sixty-fourthThe compound noun, pronoun, and adjective "one sixty-fourth (1/64 = 0.015 625)" is the standard name for "the rational fraction equal to one (1) divided by sixty-four (64)." "One sixty-fourth" equals "two to the negative sixth power (2-6 = 1/64 = 0.015 625)." "One sixty-fourth" is the sixth Eye of Horus fraction. See also Integer Powers of Two.
one ten-millionthThe compound noun and adjective "one ten-millionth (1/10,000,000 = 0.000 000 100)" is the standard name for "the rational fraction that equals "ten to the negative seventh power (10-7 = 1E-07 = 0.000 000 100)." See also Number Names.
one tenthThe compound noun and adjective "one tenth (1/10 = 0.100)" is the standard name for "the rational fraction that equals "ten to the negative first power (10-1 = 1E-01 = 0.100)." See also Number Names.
one ten-thousandthThe compound noun and adjective "one ten-thousandth (1/10,000 = 0.000 100)" is the standard name for "the rational fraction that equals "ten to the negative fourth power (10-4 = 1E-04 = 0.000 100)." See also Number Names.
one thirdThe compound noun, pronoun, and adjective "one third (1/3)" is the standard name for "the rational fraction equal to one (1) divided by three (3)."
one thirty-secondThe compound noun, pronoun, and adjective "one thirty-second (1/32 = 0.031 250)" is the standard name for "the rational fraction equal to one (1) divided by thirty-two (32)." "One thirty-second" equals "two to the negative fifth power (2-5 = 1/32 = 0.031 250)." "One thirty-second" is the fifth Eye of Horus fraction. See also Integer Powers of Two.
one thousandThe compound noun and adjective "one thousand (1,000)" is the standard name for "the cardinal number that equals ten to the third power (103 = 1E+03 = 1,000)." See also Number Names, Integer Factors, and Integer Powers of One Thousand.
one-hundred-millionthThe compound adjective and noun "one-hundred-millionth (1/100,000,000 = 0.000 000 010)" means "divided by one hundred million (100,000,000)." See also Number Names.
one-hundredthThe compound adjective and noun "one-hundredth (1/100 = 0.010)" means "divided by one hundred (100)." See also Number Names.
one-hundred-thousandthThe compound adjective and noun "one-hundred-thousandth (1/100,000 = 0.000 010)" means "divided by one hundred thousand (100,000)." See also Number Names.
one-millionthThe compound adjective and noun "one-millionth (1/1,000,000 = 0.000 001)" means "divided by one million (1,000,000)." See also Number Names.
onesThe plural noun and adjective "ones (1s)" means "an integer multiple of one (1)." See also "units."
one-thousandthThe compound adjective and noun "one-thousandth (1/1,000 = 0.001)" means "divided by one thousand (1,000)." See also Number Names.
only1. The adjective and adverb "only" means "one (1) alone."
2. The adjective "only" means "exactly the specified amount or number."
order of magnitudeThe expression "order of magnitude" (properly "decimal order of magnitude") means "an exponential range of ten to one (10:1)." "Two orders of magnitude" means "an exponential range of one hundred to one (100:1)," etc.
ordinal numberAn ordinal number is an adjective that describes the order or numerical position of an object, e.g., first, second, third, fourth, fifth, sixth, seventh, etc. See also "Ordinal Number" and Number Names.
originalThe adjective "original" means "first (1st)."
p-The metric prefix symbol p- (metric prefix: "pico-" ) denotes a multiple of ten to the negative twelfth power (10-12 = 1E-12 = 0.000 000 000 001) as defined by Le Système International d'Unités (SI).
P-The metric prefix symbol P- (metric prefix: "peta-" ) denotes a multiple of ten to the fifteenth power (1015 = 1E+15 = 1,000,000,000,000,000) as defined by Le Système International d'Unités (SI).
pairThe noun "pair" means "a set of two (2)."
particularThe adjective and noun "particular" means "of, relating to, or being a single being or thing."
parts per billionIn North American use, the compound noun "parts per billion" (symbol: ppb ) means "a relative portion represented as a ratio to ten to the negative ninth power (10-9 = 1E-09 = 0.000 000 001) of the whole, usually by mass."
parts per millionThe compound noun "parts per million" (symbol: ppm ) means "a relative portion represented as a ratio to one one-millionth (1/1,000,000 = 0.000 001) of the whole, usually by mass."
parts per quadrillionIn North American use, the compound noun "parts per quadrillion" (symbol: ppq ) means "a relative portion represented as a ratio to ten to the negative fifteenth power (10-15 = 1E-15 = 0.000 000 000 000 001) of the whole, usually by mass."
parts per thousandThe compound noun "parts per thousand" (symbol: ppt ) means "a relative portion represented as a ratio to one one-thousandth (1/1,000 = 0. 001) of the whole, usually by mass."
parts per trillionIn North American use, the compound noun "parts per trillion" (symbol: ppt ) means "a relative portion represented as a ratio to ten to the negative twelfth power (10-12 = 1E-12 = 0.000 000 000 001) of the whole, usually by mass."
pebi-The binary prefix "pebi-" (prefix symbol: Pi- ) denotes a multiple of two to the fiftieth power (250 = 1,125,899,906,842,624) as defined by the International Electrotechnical Commission (IEC). See also "petabinary."
pebinThe adjective and noun "pebin" means "two to the fiftieth power (250 = 1,125,899,906,842,624)." See also "petabinary" and "pebi-."
pendecagonThe noun "pendecagon" means "a plane figure with fifteen (15) sides."
pendecahedronThe noun "pendecahedron" means "a solid figure with fifteen (15) faces."
penta-The prefix "penta-" means "five (5)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
pentacleThe noun and adjective "pentacle" means "a pentagram inscribed in a circle."
pentaconta-The prefix "pentaconta-" means "fifty (50)." See also Prefixes & Words Based On Greek Number Names and Numeric Prefixes Used In Chemistry.
pentacontadThe noun and adjective "pentacontad" means "a group of fifty (50) members." See also Prefixes & Words Based On Greek Number Names.
pentacontadi-The prefix "pentacontadi-" means "fifty-two (52)." "Pentacontadi-" is an alternate form of the prefix "pentacontakaidi-." See also Prefixes & Words Based On Greek Number Names.
pentacontaennea-The prefix "pentacontaennea-" means "fifty-nine (59)." "Pentacontaennea-" is an alternate form of the prefix "pentacontakaiennea-."
pentacontagonThe noun and adjective "pentacontagon" means "a plain figure with fifty (50) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontagramThe noun and adjective "pentacontagram" means "an interconnected star figure with fifty (50) points formed by stellating a pentacontagon." See also Prefixes & Words Based On Greek Number Names.
pentacontahedronThe noun and adjective "pentacontahedron" means "a solid figure with fifty (50) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontahena-The prefix "pentacontahena-" means "fifty-one (51)." "Pentacontahena-" is an alternate form of the prefix "pentacontakaihena-." See also Prefixes & Words Based On Greek Number Names.
pentacontahepta-The prefix "pentacontahepta-" means "fifty-seven (57)." "Pentacontahepta-" is an alternate form of the prefix "pentacontakaihepta-."
pentacontahexa-The prefix "pentacontahexa-" means "fifty-six (56)." "Pentacontahexa-" is an alternate form of the prefix "pentacontakaihexa-."
pentacontakaidi-The prefix "pentacontakaidi-" means "fifty-two (52)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaidigonThe noun and adjective "pentacontakaidigon" means "a plain figure with fifty-two (52) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaidigramThe noun and adjective "pentacontakaidigram" means "an interconnected star figure with fifty-two (52) points formed by stellating a pentacontakaidigon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaidihedronThe noun and adjective "pentacontakaidihedron" means "a solid figure with fifty-two (52) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaidyadThe noun and adjective "pentacontakaidyad" means "a group of fifty-two (52) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaiennea-The prefix "pentacontakaiennea-" means "fifty-nine (59)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaienneadThe noun and adjective "pentacontakaiennead" means "a group of fifty-nine (59) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaienneagonThe noun and adjective "pentacontakaienneagon" means "a plain figure with fifty-nine (59) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaienneagramThe noun and adjective "pentacontakaienneagram" means "an interconnected star figure with fifty-nine (59) points formed by stellating a pentacontakaienneagon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaienneahedronThe noun and adjective "pentacontakaienneahedron" means "a solid figure with fifty-nine (59) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihena-The prefix "pentacontakaihena-" means "fifty-one (51)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihenadThe noun and adjective "pentacontakaihenad" means "a group of fifty-one (51) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihenagonThe noun and adjective "pentacontakaihenagon" means "a plain figure with fifty-one (51) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihenagramThe noun and adjective "pentacontakaihenagram" means "an interconnected star figure with fifty-one (51) points formed by stellating a pentacontakaihenagon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihenahedronThe noun and adjective "pentacontakaihenahedron" means "a solid figure with fifty-one (51) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihepta-The prefix "pentacontakaihepta-" means "fifty-seven (57)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaiheptadThe noun and adjective "pentacontakaiheptad" means "a group of fifty-seven (57) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaiheptagonThe noun and adjective "pentacontakaiheptagon" means "a plain figure with fifty-seven (57) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaiheptagramThe noun and adjective "pentacontakaiheptagram" means "an interconnected star figure with fifty-seven (57) points formed by stellating a pentacontakaiheptagon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaiheptahedronThe noun and adjective "pentacontakaiheptahedron" means "a solid figure with fifty-seven (57) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihexa-The prefix "pentacontakaihexa-" means "fifty-six (56)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihexadThe noun and adjective "pentacontakaihexad" means "a group of fifty-six (56) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihexagonThe noun and adjective "pentacontakaihexagon" means "a plain figure with fifty-six (56) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihexagramThe noun and adjective "pentacontakaihexagram" means "an interconnected star figure with fifty-six (56) points formed by stellating a pentacontakaihexagon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaihexahedronThe noun and adjective "pentacontakaihexahedron" means "a solid figure with fifty-six (56) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaiocta-The prefix "pentacontakaiocta-" means "fifty-eight (58)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaioctadThe noun and adjective "pentacontakaioctad" means "a group of fifty-eight (58) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaioctagonThe noun and adjective "pentacontakaioctagon" means "a plain figure with fifty-eight (58) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaioctagramThe noun and adjective "pentacontakaioctagram" means "an interconnected star figure with fifty-eight (58) points formed by stellating a pentacontakaioctagon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaioctahedronThe noun and adjective "pentacontakaioctahedron" means "a solid figure with fifty-eight (58) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaipenta-The prefix "pentacontakaipenta-" means "fifty-five (55)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaipentadThe noun and adjective "pentacontakaipentad" means "a group of fifty-five (55) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaipentagonThe noun and adjective "pentacontakaipentagon" means "a plain figure with fifty-five (55) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaipentagramThe noun and adjective "pentacontakaipentagram" means "an interconnected star figure with fifty-five (55) points formed by stellating a pentacontakaipentagon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaipentahedronThe noun and adjective "pentacontakaipentahedron" means "a solid figure with fifty-five (55) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitetra-The prefix "pentacontakaitetra-" means "fifty-four (54)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitetradThe noun and adjective "pentacontakaitetrad" means "a group of fifty-four (54) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitetragonThe noun and adjective "pentacontakaitetragon" means "a plain figure with fifty-four (54) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitetragramThe noun and adjective "pentacontakaitetragram" means "an interconnected star figure with fifty-four (54) points formed by stellating a pentacontakaitetragon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitetrahedronThe noun and adjective "pentacontakaitetrahedron" means "a solid figure with fifty-four (54) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitri-The prefix "pentacontakaitri-" means "fifty-three (53)." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitriadThe noun and adjective "pentacontakaitriad" means "a group of fifty-three (53) members." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitrigonThe noun and adjective "pentacontakaitrigon" means "a plain figure with fifty-three (53) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitrigramThe noun and adjective "pentacontakaitrigram" means "an interconnected star figure with fifty-three (53) points formed by stellating a pentacontakaitrigon." See also Prefixes & Words Based On Greek Number Names.
pentacontakaitrihedronThe noun and adjective "pentacontakaitrihedron" means "a solid figure with fifty-three (53) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentacontaocta-The prefix "pentacontaocta-" means "fifty-eight (58)." "Pentacontaocta-" is an alternate form of the prefix "pentacontakaiocta-." See also Prefixes & Words Based On Greek Number Names.
pentacontapenta-The prefix "pentacontapenta-" means "fifty-five (55)." "Pentacontapenta-" is an alternate form of the prefix "pentacontakaipenta-."
pentacontatetra-The prefix "pentacontatetra-" means "fifty-four (54)." "Pentacontatetra-" is an alternate form of the prefix "pentacontakaitetra-."
pentacontatri-The prefix "pentacontatri-" means "fifty-three (53)." "Pentacontatri-" is an alternate form of the prefix "pentacontakaitri-."
pentacta-The prefix "pentacta-" means "five hundred (500)." See also Numeric Prefixes Used In Chemistry.
pentadThe noun and adjective "pentad" means "a group of five (5) members." See also Prefixes & Words Based On Greek Number Names.
pentadeca-The prefix "pentadeca-" means "fifteen (15)." See also Numeric Prefixes Used In Chemistry.
pentagonThe noun and adjective "pentagon" means "a plain figure with five (5) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentagram1. The noun and adjective "pentagram" means "an interconnected star figure with five (5) points formed by stellating a pentagon." See also Prefixes & Words Based On Greek Number Names.
2. The noun "pentagram" means "a word or character sequence consisting of five (5) characters."
pentahedronThe noun and adjective "pentahedron" means "a solid figure with five (5) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentaheptaconta-The prefix "pentaheptaconta-" means "seventy-five (75)." See also Numeric Prefixes Used In Chemistry.
pentahexaconta-The prefix "pentahexaconta-" means "sixty-five (65)." See also Numeric Prefixes Used In Chemistry.
pentaicosa-The prefix "pentaicosa-" means "twenty-five (25)." See also Numeric Prefixes Used In Chemistry.
pentakaideca-The prefix "pentakaideca-" means "fifteen (15)." See also Prefixes & Words Based On Greek Number Names.
pentakaidecadThe noun and adjective "pentakaidecad" means "a group of fifteen (15) members." See also Prefixes & Words Based On Greek Number Names.
pentakaidecagonThe noun and adjective "pentakaidecagon" means "a plain figure with fifteen (15) straight sides." See also Prefixes & Words Based On Greek Number Names.
pentakaidecagramThe noun and adjective "pentakaidecagram" means "an interconnected star figure with fifteen (15) points formed by stellating a pentakaidecagon." See also Prefixes & Words Based On Greek Number Names.
pentakaidecahedronThe noun and adjective "pentakaidecahedron" means "a solid figure with fifteen (15) planar faces." See also Prefixes & Words Based On Greek Number Names.
pentalia-The prefix "pentalia-" means "five thousand (5000)." See also Numeric Prefixes Used In Chemistry.
pentameterThe noun "pentameter" means "a verse consisting of five (5) metrical feet."
pentangleThe noun "pentangle" means "a plane figure with five (5) vertices."
pentanonaconta-The prefix "pentanonaconta-" means "ninety-five (95)." See also Numeric Prefixes Used In Chemistry.
pentaoctaconta-The prefix "pentaoctaconta-" means "eighty-five (85)." See also Numeric Prefixes Used In Chemistry.
pentapentaconta-The prefix "pentapentaconta-" means "fifty-five (55)." See also Numeric Prefixes Used In Chemistry.
pentatetraconta-The prefix "pentatetraconta-" means "forty-five (45)." See also Numeric Prefixes Used In Chemistry.
pentathlonThe noun "pentathlon" means "an athletic competition consisting of five (5) separate events."
pentatriaconta-The prefix "pentatriaconta-" means "thirty-five (35)." See also Numeric Prefixes Used In Chemistry.
PentecostThe noun "Pentecost" means "the fiftieth (50th) day of the Christian Easter Season."
penultThe noun "penult" means "the next to the last member of a series."
penultimateThe adjective "penultimate" means "the next to the last member of a series."
per centumThe compound noun "per centum" is the original Latin form of "percent."
per hundredThe compound noun "per hundred" (suffix symbol: -% {percent sign} ) means "a relative portion represented as a ratio to one one-hundredth (1/100 = 0.010) of the whole."
per hundred thousandThe compound noun "per hundred thousand" means "a relative portion represented as a ratio to one one-hundred-thousandth (1/100,000 = 0.000 010) of the whole."
per milThe compound noun "per mil" (suffix symbol: -‰ {per mille sign} ) means "a relative portion represented as a ratio to one one-thousandth (1/1,000 = 0.001) of the whole." Small portions may be represented "per mil" rather than "percent."
per millThe compound noun "per mill" is an alternate spelling of "per mil."
per milleThe compound noun "per mille" is the original Latin form of "per mil."
-‰The suffix symbol -‰ {per mille sign} denotes a quantity as "per mil" which means "a relative portion represented as a ratio to one one-thousandth (1/1,000 = 0.001) of the whole."
per millionThe compound noun "per million" means "a relative portion represented as a ratio to one one-millionth (1/1,000,000 = 0.000 001) of the whole."
per ten thousandThe compound noun "per ten thousand" means "a relative portion represented as a ratio to one ten-thousandth (1/10,000 = 0.000 100) of the whole."
per thousandThe compound noun "per thousand" (suffix symbol: -‰ {per mille sign} ) means "a relative portion represented as a ratio to one one-thousandth (1/1,000 = 0.001) of the whole."
percentThe noun "percent" (suffix symbol: -% {percent sign} ) means "a relative portion represented as a ratio to one one-hundredth (1/100 = 0.010) of the whole."
Usage: A relative change in value may be measured as a percent increase (gain) or decrease (loss) from the base quantity. The first value always serves as the base quantity. Thus, a change from 40.00 to 50.00 is a 25% increase and a change from 50.00 to 40.00 is a 20% decrease. Successive percent changes cannot be added, e.g., a 20% gain followed by a 20% loss yields a net loss of 4%. A doubling is a 100% increase and a tripling is a 200% increase.
-%The suffix symbol -% {percent sign} denotes a quantity as "percent" which means "a relative portion represented as a ratio to one one-hundredth (1/100 = 0.010) of the whole."
percentageThe noun "percentage" means "a portion expressed as a percent of the whole."
percentileThe noun "percentile" means "the percent of a frequency distribution that is less than or equal to a given value."
peta-The metric prefix "peta-" (prefix symbol: P- ) denotes a multiple of ten to the fifteenth power (1015 = 1E+15 = 1,000,000,000,000,000) as defined by Le Système International d'Unités (SI).
petabinaryThe adjective "petabinary" means "two to the fiftieth power (250 = 1,125,899,906,842,624)." See also binary prefix "pebi-" and compound binary prefix symbol "Pi-."
φThe Greek lower case letter φ {phi} represents the irrational number that is one greater than its multiplicative inverse, i.e., φ = 1 + 1/φ. Φ is equal to (1+5½)/2 or approximately 1.618 033 988 750. The ancient Egyptians discovered φ, which they honored as their "Sacred Ratio." The ancient Greeks treasured φ as their "Golden Ratio." The ratio φ is used extensively in art and architecture. See also The Golden Mean and Golden Ratio.
πThe Greek lower case letter π {pi} represents "Archimedes' Constant," the ratio of the circumference of a circle to its diameter. π is a transcendental number approximately 3.141 592 653 590. See also Archimedes' Constant and Pi.
Pi-The compound binary prefix symbol Pi- (binary prefix: "pebi-" ) denotes a multiple of two to the fiftieth power (250 = 1,125,899,906,842,624) as defined by the International Electrotechnical Commission (IEC). See also "petabinary."
pico-The metric prefix "pico-" (prefix symbol: p- ) denotes a multiple of ten to the negative twelfth power (10-12 = 1E-12 = 0.000 000 000 001) as defined by Le Système International d'Unités (SI).
-plexThe suffix "-plex" means "a building divided into the prefix number of spaces."
Usage: The suffix "-plex" most commonly refers to housing and theatre complexes. "Duplex" is an alternate name for a "twoplex (2-plex)" and "triplex" is an alternate name for a "threeplex (3-plex)." A "multiplex" is "a building with many spaces."
Origin: The suffix "-plex" is a back formation of the noun "complex."
pluralThe adjective "plural" means "more than one (>1)."
plurality1. The noun "plurality" means "the state of being more than one (>1)."
2. The noun "plurality" means "the largest number of votes cast in an election for any candidate or question, especially if less than a majority."
plus1. The preposition "plus" (symbol: + {plus sign} ) denotes the operation of addition. See also "Plus."
2. The adjective and noun "plus" (prefix symbol: + {plus sign} ) means "positive" or "greater than zero (>0)."
±The symbol ± {plus or minus sign} is used to denote a quantity which should be both added and subtracted. The ± symbol can be used to denote a range of uncertainty, or to denote a pair of quantities, such as the two roots of a quadratic equation. See also "Plus or Minus Sign."
+The symbol + {plus sign} is pronounced as "plus". As a mathematical operator, the "plus sign" represents the operation of addition. The "plus sign" may also be used as an optional prefix to denote a positive number. The "plus sign" is also used to denote a positive polarity or direction. See also "Plus Sign."
poly-The prefix "poly-" means "having more than one (>1)."
polygamicThe adjective "polygamic" means "being engaged in multiple marriage."
polygamistThe noun and adjective "polygamist" means "a person who is engaged in multiple marriage."
polygamousThe adjective "polygamous" means "being engaged in multiple marriage."
polygamyThe noun "polygamy" means "marriage to more than one (1) spouse at the same time."
Usage: Polygamy usually refers to multiple marriage that is socially accepted, at least among a social subgroup. Bigamy usually refers to illegal multiple marriage.
positive1. The adjective and noun "positive" means "greater than zero (>0)." A "positive" quantity may be denoted with the optional prefix symbol + {plus sign}. "Positive" has the opposite polarity, direction, or meaning of "negative."
2. The adjective and noun "positive" is a logical value. "Negative" and "positive" are sometimes used as a binary logic pair.
ppbIn North American use, the compound symbol "ppb" represents "parts per billion" designating "a relative portion represented as a ratio to ten to the negative ninth power (10-9 = 1E-09 = 0.000 000 001) of the whole, usually by mass."
ppmThe compound symbol "ppm" represents "parts per million" designating "a relative portion represented as a ratio to one one-millionth (1/1,000,000 = 0.000 001) of the whole, usually by mass."
ppqIn North American use, the compound symbol "ppq" represents "parts per quadrillion" designating "a relative portion represented as a ratio to ten to the negative fifteenth power (10-15 = 1E-15 = 0.000 000 000 000 001) of the whole, usually by mass."
ppt1. The compound symbol "ppt" represents "parts per thousand" designating "a relative portion represented as a ratio to one one-thousandth (1/1,000 = 0. 001) of the whole, usually by mass."
2. In North American use, the compound symbol "ppt" represents "parts per trillion" designating "a relative portion represented as a ratio to ten to the negative twelfth power (10-12 = 1E-12 = 0.000 000 000 001) of the whole, usually by mass."
premierThe adjective and noun "premier" means "first (1st) in time, order, rank, or importance."
preteenThe noun and adjective "preteen" means "less than thirteen (13) years of age." "Preteen" commonly means "between nine (9) and thirteen (13) years of age."
primalThe adjective "primal" means "first (1st)."
primaryThe adjective and noun "primary" means "first (1st) in order or importance."
primateThe noun and adjective "primate" means "a member of the first (1st) rank or order."
prime1. The adjective "prime" means "of first (1st) rank."
-′2. The suffix symbol -′ {prime} denotes a linear measurement in feet. One foot is equal to 0.304 800 meter.
3. The suffix symbol -′ {prime} denotes an angular measurement in minutes. One minute is equal to one sixtieth (1/60) of a degree (suffix symbol: {degree symbol} ) or one twenty-one-thousand-six-hundredth (1/21,600) of a circle.
prime numberA prime number is an integer greater than one (1) that is a multiple of no integer other than itself and one (1), e.g., 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, etc. See also "Prime Number" and Prime Factors and Factor Pairs for the Integers One Through Ten Thousand.
princeThe noun "prince" means "a man of the first (1st) or highest rank of citizenship."
princelyThe adjective and adverb "princely" means "of the first (1st) or highest rank of citizenship."
princessThe noun "princess" means "a woman of the first (1st) or highest rank of citizenship."
Pythagoras' Constant"Pythagoras' Constant" is the ratio of the length of a diagonal of a square to the length of a side of the square. "Pythagoras' Constant" is an irrational number equal to the square root of two or approximately 1.414 213 562 373. See also "Pythagoras' Constant" and "Pythagoras's Constant."
quadra-The numeric prefix "quadra-" means "four (4)." This prefix is derived from the Latin cardinal number "quattuor (IIII)."
quadragenarianThe noun and adjective "quadragenarian" means "between forty (40) and fifty (50) years of age." See also "forty-something."
quadragenaryThe adjective "quadragenary" means "having forty (40) parts."
quadragesimalThe adjective "quadragesimal" means "based on the number forty (40)."
quadraginta-The numeric prefix "quadraginta-" means "forty (40)." This prefix is derived from the Latin cardinal number "quadraginta (XXXX)."
quadragintennaryThe noun and adjective "quadragintennary" means "a group of forty (40) or a period of forty (40) years."
quadragintennial1. The adjective and noun "quadragintennial" means "recurring every forty (40) years."
2. The adjective and noun "quadragintennial" means "lasting forty (40) years."
3. The noun and adjective "quadragintennial" means "a forty (40) year anniversary."
quadragintenniumThe noun and adjective "quadragintennium" means "a period of forty (40) years."
quadragintillionThe noun and adjective "quadragintillion" means multiplied by 10123 in the American number naming system, but means multiplied by 10240 in the Chuquet number naming system. See also Large Numbers.
quadrancentennial1. The adjective and noun "quadrancentennial" means "recurring every twenty-five (25) years."
2. The adjective and noun "quadrancentennial" means "lasting twenty-five (25) years."
3. The noun and adjective "quadrancentennial" means "a twenty-five (25) year anniversary."
quadrangleThe noun "quadrangle" means "a plane figure with four (4) vertices."
quadrangularThe adjective "quadrangular" means "having four (4) vertices."
quadranmillenary1. The noun and adjective "quadranmillenary" means "a group of two hundred fifty (250)."
2. The noun and adjective "quadranmillenary" means "a period of two hundred fifty (250) years."
3. The noun and adjective "quadranmillenary" means "a two hundred fifty (250) year anniversary."
4. The adjective and noun "quadranmillenary" means "two hundred fiftieth (250th) in rank or order."
quadranmillennial1. The adjective and noun "quadranmillennial" means "recurring every two hundred fifty (250) years."
2. The adjective and noun "quadranmillennial" means "lasting two hundred fifty (250) years."
3. The noun and adjective "quadranmillennial" means "a two hundred fifty (250) year anniversary."
quadranmillenniumThe noun and adjective "quadranmillennium" means "a period of two hundred fifty (250) years."
quadrennaryThe noun and adjective "quadrennary" means "a group of four (4) or a period of four (4) years."
quadrennial1. The adjective and noun "quadrennial" means "recurring every four (4) years."
2. The adjective and noun "quadrennial" means "lasting four (4) years."
3. The noun and adjective "quadrennial" means "a four (4) year anniversary."
quadrenniumThe noun and adjective "quadrennium" means "a period of four (4) years."
quadricennialThe noun and adjective "quadricennial" means "a forty (40) year anniversary."
quadricentenary1. The noun and adjective "quadricentenary" means "a group of four hundred (400)."
2. The noun and adjective "quadricentenary" means "a period of four hundred (400) years."
3. The noun and adjective "quadricentenary" means "a four hundred (400) year anniversary."
4. The adjective and noun "quadricentenary" means "four hundredth (400th) in rank or order."
quadricentennial1. The adjective and noun "quadricentennial" means "recurring every four hundred (400) years."
2. The adjective and noun "quadricentennial" means "lasting four hundred (400) years."
3. The noun and adjective "quadricentennial" means "a four hundred (400) year anniversary."
quadricentenniumThe noun and adjective "quadricentennium" means "a period of four hundred (400) years."
quadricycleThe noun, adjective, and verb "quadricycle" means "having four (4) wheels."
quadriennialThe adjective "quadriennial" means "recurring every four (4) years."
quadrikibinalThe adjective "quadrikibinal" means "based on the number four thousand ninety-six (212 = 4096)." See also Base Number Systems.
quadrilateralThe adjective "quadrilateral" means "having four (4) sides."
quadrilliardThe noun and adjective "quadrilliard" means "multiplied by ten to the twenty-seventh power (1027 = 1E+27 = 1,000,000,000,000,000,000,000,000,000)" in the modified Chuquet number naming system.
quadrillionThe noun and adjective "quadrillion" means multiplied by ten to the fifteenth power (1015 = 1E+15 = 1,000,000,000,000,000) in the American number naming system, but means multiplied by ten to the twenty-fourth power (1024 = 1E+24 = 1,000,000,000,000,000,000,000,000) in the Chuquet number naming system. See also Large Numbers.
quadrimillenary1. The noun and adjective "quadrimillenary" means "a group of four thousand (4000)."
2. The noun and adjective "quadrimillenary" means "a period of four thousand (4000) years."
3. The noun and adjective "quadrimillenary" means "a four thousand (4000) year anniversary."
4. The adjective and noun "quadrimillenary" means "four thousandth (4000th) in rank or order."
quadrimillennial1. The adjective and noun "quadrimillennial" means "recurring every four thousand (4000) years."
2. The adjective and noun "quadrimillennial" means "lasting four thousand (4000) years."
3. The noun and adjective "quadrimillennial" means "a four thousand (4000) year anniversary."
quadrimillenniumThe noun and adjective "quadrimillennium" means "a period of four thousand (4000) years."
quadriplegiaThe noun "quadruplegia" means "a paralysis of all four (4) limbs."
quadriplegicThe adjective and noun "quadruplegic" means "having a paralysis of all four (4) limbs."
quadrupedThe noun "quadruped" means "an animal with four (4) feet."
quadrupedalThe adjective "quadrupedal" means "having four (4) feet."
quadrupleThe adjective and noun "quadruple" means "multiplied by four (4)."
quadrupletThe noun and adjective "quadruplet" means "one of four (4) siblings born together" or "one of four (4) very similar things."
quadruplicateThe verb, noun, and adjective "quadruplicate" means "to make three (3) copies of one original, for a total of four (4) objects."
quantity1. The noun and adjective "quantity" means "either an abstract number or a hypothetically measurable physical attribute."
2. The noun and adjective "quantity" means "a significantly large quantity."
quartThe noun and adjective "quart" means "one quarter (1/4) of a gallon."
quartalThe adjective "quartal" means "based on the number four (4)." See also Base Number Notation.
quarter1. The noun and adjective "quarter (1/4)" means "divided by four (4)." A "quarter" coin has a value of "one fourth of a dollar ($0.25)." See also "fourth."
2. The verb "quarter" means "to divide by four (1/4)."
quarter centuryThe compound noun "quarter century" means "twenty-five (25) years."
quarterlyThe adjective "quarterly" means "recurring once (1) in each quarter (1/4) of the year or every three (3) months."
quartetThe noun "quartet" means "a group of four (4) members."
quartileThe noun "quartile" means "a frequency distribution divided into four (4) equal parts."
quartoThe noun "quarto (4to)" means "a book with leaves printed on one fourth (1/4) of the printer sheet."
quasquicentenary1. The noun and adjective "quasquicentenary" means "a group of one hundred twenty-five (125)."
2. The noun and adjective "quasquicentenary" means "a period of one hundred twenty-five (125) years."
3. The noun and adjective "quasquicentenary" means "a one hundred twenty-five (125) year anniversary."
4. The adjective and noun "quasquicentenary" means "one hundred twenty-fifth (125th) in rank or order."
quasquicentennial1. The adjective and noun "quasquicentennial" means "recurring every one hundred twenty-five (125) years."
2. The adjective and noun "quasquicentennial" means "lasting one hundred twenty-five (125) years."
3. The noun and adjective "quasquicentennial" means "a one hundred twenty-five (125) year anniversary."
quasquicentenniumThe noun and adjective "quasquicentennium" means "a period of one hundred twenty-five (125) years."
quaternary1. The adjective and noun "quaternary" means "fourth (4th) in order or importance."
2. The adjective "quaternary" means "having four (4) parts." See also Base Number Notation.
quattuordecennaryThe noun and adjective "quattuordecennary" means "a group of fourteen (14) or a period of fourteen (14) years."
quattuordecennial1. The adjective and noun "quattuordecennial" means "recurring every fourteen (14) years."
2. The adjective and noun "quattuordecennial" means "lasting fourteen (14) years."
3. The noun and adjective "quattuordecennial" means "a fourteen (14) year anniversary."
quattuordecenniumThe noun and adjective "quattuordecennium" means "a period of fourteen (14) years."
quattuordecentenary1. The noun and adjective "quattuordecentenary" means "a group of one thousand four hundred (1400)."
2. The noun and adjective "quattuordecentenary" means "a period of one thousand four hundred (1400) years."
3. The noun and adjective "quattuordecentenary" means "a one thousand four hundred (1400) year anniversary."
4. The adjective and noun "quattuordecentenary" means "one thousand four hundredth (1400th) in rank or order."
quattuordecentennial1. The adjective and noun "quattuordecentennial" means "recurring every one thousand four hundred (1400) years."
2. The adjective and noun "quattuordecentennial" means "lasting one thousand four hundred (1400) years."
3. The noun and adjective "quattuordecentennial" means "a one thousand four hundred (1400) year anniversary."
quattuordecentenniumThe noun and adjective "quattuordecentennium" means "a period of one thousand four hundred (1400) years."
quattuordeci-The numeric prefix "quattuordeci-" means "fourteen (14)." This prefix is derived from the Latin cardinal number "quattuordecim (XIIII)."
quattuordecillionThe noun and adjective "quattuordecillion" means multiplied by 1045 in the American number naming system, but means multiplied by 1084 in the Chuquet number naming system. See also Large Numbers.
quattuornonaginta-The numeric prefix "quattuornonaginta-" means "ninety-four (94)." This prefix is derived from the Latin cardinal number "quattuor et nonaginta (LXXXXIIII)."
quattuornonagintennaryThe noun and adjective "quattuornonagintennary" means "a group of ninety-four (94) or a period of ninety-four (94) years."
quattuornonagintennial1. The adjective and noun "quattuornonagintennial" means "recurring every ninety-four (94) years."
2. The adjective and noun "quattuornonagintennial" means "lasting ninety-four (94) years."
3. The noun and adjective "quattuornonagintennial" means "a ninety-four (94) year anniversary."
quattuornonagintenniumThe noun and adjective "quattuornonagintennium" means "a period of ninety-four (94) years."
quattuornonagintillionThe noun and adjective "quattuornonagintillion" means multiplied by 10285 in the American number naming system, but means multiplied by 10564 in the Chuquet number naming system. See also Large Numbers.
quattuoroctoginta-The numeric prefix "quattuoroctoginta-" means "eighty-four (84)." This prefix is derived from the Latin cardinal number "quattuor et octoginta (LXXXIIII)."
quattuoroctogintennaryThe noun and adjective "quattuoroctogintennary" means "a group of eighty-four (84) or a period of eighty-four (84) years."
quattuoroctogintennial1. The adjective and noun "quattuoroctogintennial" means "recurring every eighty-four (84) years."
2. The adjective and noun "quattuoroctogintennial" means "lasting eighty-four (84) years."
3. The noun and adjective "quattuoroctogintennial" means "an eighty-four (84) year anniversary."
quattuoroctogintenniumThe noun and adjective "quattuoroctogintennium" means "a period of eighty-four (84) years."
quattuoroctogintillionThe noun and adjective "quattuoroctogintillion" means multiplied by 10255 in the American number naming system, but means multiplied by 10504 in the Chuquet number naming system. See also Large Numbers.
quattuorquadraginta-The numeric prefix "quattuorquadraginta-" means "forty-four (44)." This prefix is derived from the Latin cardinal number "quattuor et quadraginta (XXXXIIII)."
quattuorquadragintennaryThe noun and adjective "quattuorquadragintennary" means "a group of forty-four (44) or a period of forty-four (44) years."
quattuorquadragintennial1. The adjective and noun "quattuorquadragintennial" means "recurring every forty-four (44) years."
2. The adjective and noun "quattuorquadragintennial" means "lasting forty-four (44) years."
3. The noun and adjective "quattuorquadragintennial" means "a forty-four (44) year anniversary."
quattuorquadragintenniumThe noun and adjective "quattuorquadragintennium" means "a period of forty-four (44) years."
quattuorquadragintillionThe noun and adjective "quattuorquadragintillion" means multiplied by 10135 in the American number naming system, but means multiplied by 10264 in the Chuquet number naming system. See also Large Numbers.
quattuorquinquaginta-The numeric prefix "quattuorquinquaginta-" means "fifty-four (54)." This prefix is derived from the Latin cardinal number "quattuor et quinquaginta (LIIII)."
quattuorquinquagintennaryThe noun and adjective "quattuorquinquagintennary" means "a group of fifty-four (54) or a period of fifty-four (54) years."
quattuorquinquagintennial1. The adjective and noun "quattuorquinquagintennial" means "recurring every fifty-four (54) years."
2. The adjective and noun "quattuorquinquagintennial" means "lasting fifty-four (54) years."
3. The noun and adjective "quattuorquinquagintennial" means "a fifty-four (54) year anniversary."
quattuorquinquagintenniumThe noun and adjective "quattuorquinquagintennium" means "a period of fifty-four (54) years."
quattuorquinquagintillionThe noun and adjective "quattuorquinquagintillion" means multiplied by 10165 in the American number naming system, but means multiplied by 10324 in the Chuquet number naming system. See also Large Numbers.
quattuorseptuaginta-The numeric prefix "quattuorseptuaginta-" means "seventy-four (74)." This prefix is derived from the Latin cardinal number "quattuor et septuaginta (LXXIIII)."
quattuorseptuagintennaryThe noun and adjective "quattuorseptuagintennary" means "a group of seventy-four (74) or a period of seventy-four (74) years."
quattuorseptuagintennial1. The adjective and noun "quattuorseptuagintennial" means "recurring every seventy-four (74) years."
2. The adjective and noun "quattuorseptuagintennial" means "lasting seventy-four (74) years."
3. The noun and adjective "quattuorseptuagintennial" means "a seventy-four (74) year anniversary."
quattuorseptuagintenniumThe noun and adjective "quattuorseptuagintennium" means "a period of seventy-four (74) years."
quattuorseptuagintillionThe noun and adjective "quattuorseptuagintillion" means multiplied by 10225 in the American number naming system, but means multiplied by 10444 in the Chuquet number naming system. See also Large Numbers.
quattuorsexaginta-The numeric prefix "quattuorsexaginta-" means "sixty-four (64)." This prefix is derived from the Latin cardinal number "quattuor et sexaginta (LXIIII)."
quattuorsexagintakibinalThe adjective "quattuorsexagintakibinal" means "based on the number sixty-five thousand five hundred thirty-six (216 = 65,536)." See also Base Number Systems.
quattuorsexagintennaryThe noun and adjective "quattuorsexagintennary" means "a group of sixty-four (64) or a period of sixty-four (64) years."
quattuorsexagintennial1. The adjective and noun "quattuorsexagintennial" means "recurring every sixty-four (64) years."
2. The adjective and noun "quattuorsexagintennial" means "lasting sixty-four (64) years."
3. The noun and adjective "quattuorsexagintennial" means "a sixty-four (64) year anniversary."
quattuorsexagintenniumThe noun and adjective "quattuorsexagintennium" means "a period of sixty-four (64) years."
quattuorsexagintillionThe noun and adjective "quattuorsexagintillion" means multiplied by 10195 in the American number naming system, but means multiplied by 10384 in the Chuquet number naming system. See also Large Numbers.
quattuortriginta-The numeric prefix "quattuortriginta-" means "thirty-four (34)." This prefix is derived from the Latin cardinal number "quattuor et triginta (XXXIIII)."
quattuortrigintacentenary1. The noun and adjective "quattuortrigintacentenary" means "a group of three thousand four hundred (3400)."
2. The noun and adjective "quattuortrigintacentenary" means "a period of three thousand four hundred (3400) years."
3. The noun and adjective "quattuortrigintacentenary" means "a three thousand four hundred (3400) year anniversary."
4. The adjective and noun "quattuortrigintacentenary" means "three thousand four hundredth (3400th) in rank or order."
quattuortrigintacentennial1. The adjective and noun "quattuortrigintacentennial" means "recurring every three thousand four hundred (3400) years."
2. The adjective and noun "quattuortrigintacentennial" means "lasting three thousand four hundred (3400) years."
3. The noun and adjective "quattuortrigintacentennial" means "a three thousand four hundred (3400) year anniversary."
quattuortrigintacentenniumThe noun and adjective "quattuortrigintacentennium" means "a period of three thousand four hundred (3400) years."
quattuortrigintennaryThe noun and adjective "quattuortrigintennary" means "a group of thirty-four (34) or a period of thirty-four (34) years."
quattuortrigintennial1. The adjective and noun "quattuortrigintennial" means "recurring every thirty-four (34) years."
2. The adjective and noun "quattuortrigintennial" means "lasting thirty-four (34) years."
3. The noun and adjective "quattuortrigintennial" means "a thirty-four (34) year anniversary."
quattuortrigintenniumThe noun and adjective "quattuortrigintennium" means "a period of thirty-four (34) years."
quattuortrigintillionThe noun and adjective "quattuortrigintillion" means multiplied by 10105 in the American number naming system, but means multiplied by 10204 in the Chuquet number naming system. See also Large Numbers.
quattuorvigesimalThe adjective "quattuorvigesimal" means "based on the number twenty-four (24)." See also Base Number Notation.
quattuorvigintennaryThe noun and adjective "quattuorvigintennary" means "a group of twenty-four (24) or a period of twenty-four (24) years."
quattuorvigintennial1. The adjective and noun "quattuorvigintennial" means "recurring every twenty-four (24) years."
2. The adjective and noun "quattuorvigintennial" means "lasting twenty-four (24) years."
3. The noun and adjective "quattuorvigintennial" means "a twenty-four (24) year anniversary."
quattuorvigintenniumThe noun and adjective "quattuorvigintennium" means "a period of twenty-four (24) years."
quattuorviginti-The numeric prefix "quattuorviginti-" means "twenty-four (24)." This prefix is derived from the Latin cardinal number "quattuor et viginti (XXIIII)."
quattuorviginticentenary1. The noun and adjective "quattuorviginticentenary" means "a group of two thousand four hundred (2400)."
2. The noun and adjective "quattuorviginticentenary" means "a period of two thousand four hundred (2400) years."
3. The noun and adjective "quattuorviginticentenary" means "a two thousand four hundred (2400) year anniversary."
4. The adjective and noun "quattuorviginticentenary" means "two thousand four hundredth (2400th) in rank or order."
quattuorviginticentennial1. The adjective and noun "quattuorviginticentennial" means "recurring every two thousand four hundred (2400) years."
2. The adjective and noun "quattuorviginticentennial" means "lasting two thousand four hundred (2400) years."
3. The noun and adjective "quattuorviginticentennial" means "a two thousand four hundred (2400) year anniversary."
quattuorviginticentenniumThe noun and adjective "quattuorviginticentennium" means "a period of two thousand four hundred (2400) years."
quattuorvigintillionThe noun and adjective "quattuorvigintillion" means multiplied by 1075 in the American number naming system, but means multiplied by 10144 in the Chuquet number naming system. See also Large Numbers.
quinary1. The adjective and noun "quinary" means "fifth (5th) in order or importance."
2. The adjective "quinary" means "having five (5) parts."
quincentenary1. The noun and adjective "quincentenary" means "a group of five hundred (500)."
2. The noun and adjective "quincentenary" means "a period of five hundred (500) years."
3. The noun and adjective "quincentenary" means "a five hundred (500) year anniversary."
4. The adjective and noun "quincentenary" means "five hundredth (500th) in rank or order."
quincentennial1. The adjective and noun "quincentennial" means "recurring every five hundred (500) years."
2. The adjective and noun "quincentennial" means "lasting five hundred (500) years."
3. The noun and adjective "quincentennial" means "a five hundred (500) year anniversary."
quincentenniumThe noun and adjective "quincentennium" means "a period of five hundred (500) years."
quincunxThe noun "quincunx" means "five (5) objects arranged in a square or rectangle with one (1) at each corner and one (1) in the center."
quincuxThe noun and adjective "quincux" means "having five (5) of something."
quindecennaryThe noun and adjective "quindecennary" means "a group of fifteen (15) or a period of fifteen (15) years."
quindecennial1. The adjective and noun "quindecennial" means "recurring every fifteen (15) years."
2. The adjective and noun "quindecennial" means "lasting fifteen (15) years."
3. The noun and adjective "quindecennial" means "a fifteen (15) year anniversary."
quindecenniumThe noun and adjective "quindecennium" means "a period of fifteen (15) years."
quindeci-The numeric prefix "quindeci-" means "fifteen (15)." This prefix is derived from the Latin cardinal number "quindecim (XV)."
quindecillionThe noun and adjective "quindecillion" means multiplied by 1048 in the American number naming system, but means multiplied by 1090 in the Chuquet number naming system. See also Large Numbers.
quindenaryThe adjective "quindenary" means "having fifteen (15) parts."
quinmillenary1. The noun and adjective "quinmillenary" means "a group of five thousand (5000)."
2. The noun and adjective "quinmillenary" means "a period of five thousand (5000) years."
3. The noun and adjective "quinmillenary" means "a five thousand (5000) year anniversary."
4. The adjective and noun "quinmillenary" means "five thousandth (5000th) in rank or order."
quinmillennial1. The adjective and noun "quinmillennial" means "recurring every five thousand (5000) years."
2. The adjective and noun "quinmillennial" means "lasting five thousand (5000) years."
3. The noun and adjective "quinmillennial" means "a five thousand (5000) year anniversary."
quinmillenniumThe noun and adjective "quinmillennium" means "a period of five thousand (5000) years."
quinnonaginta-The numeric prefix "quinnonaginta-" means "ninety-five (95)." This prefix is derived from the Latin cardinal number "quinque et nonaginta (LXXXXV)."
quinnonagintennaryThe noun and adjective "quinnonagintennary" means "a group of ninety-five (95) or a period of ninety-five (95) years."
quinnonagintennial1. The adjective and noun "quinnonagintennial" means "recurring every ninety-five (95) years."
2. The adjective and noun "quinnonagintennial" means "lasting ninety-five (95) years."
3. The noun and adjective "quinnonagintennial" means "a ninety-five (95) year anniversary."
quinnonagintenniumThe noun and adjective "quinnonagintennium" means "a period of ninety-five (95) years."
quinnonagintillionThe noun and adjective "quinnonagintillion" means multiplied by 10288 in the American number naming system, but means multiplied by 10570 in the Chuquet number naming system. See also Large Numbers.
quinoctoginta-The numeric prefix "quinoctoginta-" means "eighty-five (85)." This prefix is derived from the Latin cardinal number "quinque et octoginta (LXXXV)."
quinoctogintennaryThe noun and adjective "quinoctogintennary" means "a group of eighty-five (85) or a period of eighty-five (85) years."
quinoctogintennial1. The adjective and noun "quinoctogintennial" means "recurring every eighty-five (85) years."
2. The adjective and noun "quinoctogintennial" means "lasting eighty-five (85) years."
3. The noun and adjective "quinoctogintennial" means "an eighty-five (85) year anniversary."
quinoctogintenniumThe noun and adjective "quinoctogintennium" means "a period of eighty-five (85) years."
quinoctogintillionThe noun and adjective "quinoctogintillion" means multiplied by 10258 in the American number naming system, but means multiplied by 10510 in the Chuquet number naming system. See also Large Numbers.
quinquadraginta-The numeric prefix "quinquadraginta-" means "forty-five (45)." This prefix is derived from the Latin cardinal number "quinque et quadraginta (XXXXV)."
quinquadragintennaryThe noun and adjective "quinquadragintennary" means "a group of forty-five (45) or a period of forty-five (45) years."
quinquadragintennial1. The adjective and noun "quinquadragintennial" means "recurring every forty-five (45) years."
2. The adjective and noun "quinquadragintennial" means "lasting forty-five (45) years."
3. The noun and adjective "quinquadragintennial" means "a forty-five (45) year anniversary."
quinquadragintenniumThe noun and adjective "quinquadragintennium" means "a period of forty-five (45) years."
quinquadragintillionThe noun and adjective "quinquadragintillion" means multiplied by 10138 in the American number naming system, but means multiplied by 10270 in the Chuquet number naming system. See also Large Numbers.
quinquagenarianThe noun and adjective "quinquagenarian" means "between fifty (50) and sixty (60) years of age." See also "fifty-something."
quinquagenaryThe adjective "quinquagenary" means "having fifty (50) parts."
quinquagesimalThe adjective "quinquagesimal" means "based on the number fifty (50)."
quinquaginta-The numeric prefix "quinquaginta-" means "fifty (50)." This prefix is derived from the Latin cardinal number "quinquaginta (L)."
quinquagintennaryThe noun and adjective "quinquagintennary" means "a group of fifty (50) or a period of fifty (50) years."
quinquagintennial1. The adjective and noun "quinquagintennial" means "recurring every fifty (50) years."
2. The adjective and noun "quinquagintennial" means "lasting fifty (50) years."
3. The noun and adjective "quinquagintennial" means "a fifty (50) year anniversary."
quinquagintenniumThe noun and adjective "quinquagintennium" means "a period of fifty (50) years."
quinquagintillionThe noun and adjective "quinquagintillion" means multiplied by 10153 in the American number naming system, but means multiplied by 10300 in the Chuquet number naming system. See also Large Numbers.
quinquelateralThe adjective "quinquelateral" means "having five (5) sides."
quinquennaryThe noun and adjective "quinquennary" means "a group of five (5) or a period of five (5) years."
quinquennial1. The adjective and noun "quinquennial" means "recurring every five (5) years."
2. The adjective and noun "quinquennial" means "lasting five (5) years."
3. The noun and adjective "quinquennial" means "a five (5) year anniversary."
quinquenniumThe noun and adjective "quinquennium" means "a period of five (5) years."
quinquinquaginta-The numeric prefix "quinquinquaginta-" means "fifty-five (55)." This prefix is derived from the Latin cardinal number "quinque et quinquaginta (LV)."
quinquinquagintennaryThe noun and adjective "quinquinquagintennary" means "a group of fifty-five (55) or a period of fifty-five (55) years."
quinquinquagintennial1. The adjective and noun "quinquinquagintennial" means "recurring every fifty-five (55) years."
2. The adjective and noun "quinquinquagintennial" means "lasting fifty-five (55) years."
3. The noun and adjective "quinquinquagintennial" means "a fifty-five (55) year anniversary."
quinquinquagintenniumThe noun and adjective "quinquinquagintennium" means "a period of fifty-five (55) years."
quinquinquagintillionThe noun and adjective "quinquinquagintillion" means multiplied by 10168 in the American number naming system, but means multiplied by 10330 in the Chuquet number naming system. See also Large Numbers.
quinseptuaginta-The numeric prefix "quinseptuaginta-" means "seventy-five (75)." This prefix is derived from the Latin cardinal number "quinque et septuaginta (LXXV)."
quinseptuagintennaryThe noun and adjective "quinseptuagintennary" means "a group of seventy-five (75) or a period of seventy-five (75) years."
quinseptuagintennial1. The adjective and noun "quinseptuagintennial" means "recurring every seventy-five (75) years."
2. The adjective and noun "quinseptuagintennial" means "lasting seventy-five (75) years."
3. The noun and adjective "quinseptuagintennial" means "a seventy-five (75) year anniversary."
quinseptuagintenniumThe noun and adjective "quinseptuagintennium" means "a period of seventy-five (75) years."
quinseptuagintillionThe noun and adjective "quinseptuagintillion" means multiplied by 10228 in the American number naming system, but means multiplied by 10450 in the Chuquet number naming system. See also Large Numbers.
quinsexaginta-The numeric prefix "quinsexaginta-" means "sixty-five (65)." This prefix is derived from the Latin cardinal number "quinque et sexaginta (LXV)."
quinsexagintennaryThe noun and adjective "quinsexagintennary" means "a group of sixty-five (65) or a period of sixty-five (65) years."
quinsexagintennial1. The adjective and noun "quinsexagintennial" means "recurring every sixty-five (65) years."
2. The adjective and noun "quinsexagintennial" means "lasting sixty-five (65) years."
3. The noun and adjective "quinsexagintennial" means "a sixty-five (65) year anniversary."
quinsexagintenniumThe noun and adjective "quinsexagintennium" means "a period of sixty-five (65) years."
quinsexagintillionThe noun and adjective "quinsexagintillion" means multiplied by 10198 in the American number naming system, but means multiplied by 10390 in the Chuquet number naming system. See also Large Numbers.
quintThe noun and adjective "quint" means "one of five (5)."
quint-The numeric prefix "quint-" means "five (5)." This prefix is derived from the Latin cardinal number "quinque (V)."
quintalThe adjective "quintal" means "based on the number five (5)." See also base five and Base Number Notation.
quintessenceThe noun "quintessence" means "the fifth (5th) and highest essence of an object or being." See also "fifth essence."
Origin: Aristotle taught that all things are composed of four material elements and one immaterial essence. The four material elements are earth, water, air, and fire. The fifth essence is the form of an object or the spirit of a being. The fifth essence creates the structure and logic of the universe.
quintessentialThe adjective "quintessential" means "embodying the fifth (5th) and highest essence of an object or class." See also "quintessence."
quintetThe noun "quintet" means "a group of five (5) members."
quintileThe noun "quintile" means "a frequency distribution divided into five (5) equal parts."
quintillionThe noun and adjective "quintillion" means multiplied by 1018 in the American number naming system, but means multiplied by 1030 in the Chuquet number naming system. See also Large Numbers.
quintriginta-The numeric prefix "quintriginta-" means "thirty-five (35)." This prefix is derived from the Latin cardinal number "quinque et triginta (XXXV)."
quintrigintacentenary1. The noun and adjective "quintrigintacentenary" means "a group of three thousand five hundred (3500)."
2. The noun and adjective "quintrigintacentenary" means "a period of three thousand five hundred (3500) years."
3. The noun and adjective "quintrigintacentenary" means "a three thousand five hundred (3500) year anniversary."
4. The adjective and noun "quintrigintacentenary" means "three thousand five hundredth (3500th) in rank or order."
quintrigintacentennial1. The adjective and noun "quintrigintacentennial" means "recurring every three thousand five hundred (3500) years."
2. The adjective and noun "quintrigintacentennial" means "lasting three thousand five hundred (3500) years."
3. The noun and adjective "quintrigintacentennial" means "a three thousand five hundred (3500) year anniversary."
quintrigintacentenniumThe noun and adjective "quintrigintacentennium" means "a period of three thousand five hundred (3500) years."
quintrigintennaryThe noun and adjective "quintrigintennary" means "a group of thirty-five (35) or a period of thirty-five (35) years."
quintrigintennial1. The adjective and noun "quintrigintennial" means "recurring every thirty-five (35) years."
2. The adjective and noun "quintrigintennial" means "lasting thirty-five (35) years."
3. The noun and adjective "quintrigintennial" means "a thirty-five (35) year anniversary."
quintrigintenniumThe noun and adjective "quintrigintennium" means "a period of thirty-five (35) years."
quintrigintillionThe noun and adjective "quintrigintillion" means multiplied by 10108 in the American number naming system, but means multiplied by 10210 in the Chuquet number naming system. See also Large Numbers.
quintupleThe verb, adjective, adverb, and noun "quintuple" means "multiply by five (5)."
quintuplet1. The noun "quintuplet" means "five (5)."
2. The noun and adjective "quintuplet" means "one of five (5) siblings born together" or "one of five (5) very similar things."
quintuplicateThe verb, noun, and adjective "quintuplicate" means "to make four (4) copies of one original, for a total of five (5) objects."
quinvigintennaryThe noun and adjective "quinvigintennary" means "a group of twenty-five (25) or a period of twenty-five (25) years."
quinvigintennial1. The adjective and noun "quinvigintennial" means "recurring every twenty-five (25) years."
2. The adjective and noun "quinvigintennial" means "lasting twenty-five (25) years."
3. The noun and adjective "quinvigintennial" means "a twenty-five (25) year anniversary."
quinvigintenniumThe noun and adjective "quinvigintennium" means "a period of twenty-five (25) years."
quinviginti-The numeric prefix "quinviginti-" means "twenty-five (25)." This prefix is derived from the Latin cardinal number "quinque et viginti (XXV)."
quinviginticentenary1. The noun and adjective "quinviginticentenary" means "a group of two thousand five hundred (2500)."
2. The noun and adjective "quinviginticentenary" means "a period of two thousand five hundred (2500) years."
3. The noun and adjective "quinviginticentenary" means "a two thousand five hundred (2500) year anniversary."
4. The adjective and noun "quinviginticentenary" means "two thousand five hundredth (2500th) in rank or order."
quinviginticentennial1. The adjective and noun "quinviginticentennial" means "recurring every two thousand five hundred (2500) years."
2. The adjective and noun "quinviginticentennial" means "lasting two thousand five hundred (2500) years."
3. The noun and adjective "quinviginticentennial" means "a two thousand five hundred (2500) year anniversary."
quinviginticentenniumThe noun and adjective "quinviginticentennium" means "a period of two thousand five hundred (2500) years."
quinvigintillionThe noun and adjective "quinvigintillion" means multiplied by 1078 in the American number naming system, but means multiplied by 10150 in the Chuquet number naming system. See also Large Numbers.
quorumThe noun "quorum" means "the minimum number of members required to be present to conduct business." An organization or committee may establish a quorum, which by default is a majority of members.
rational fractionA rational fraction is a rational number expressed as the ratio or fraction of one integer divided by another integer. Examples include 1/2, 3/6, 500/1000, -5/64, 0/19, 4/3, -475/1, etc. See also "Fraction."
rational numberA rational number is a real number that can be expressed as the ratio or fraction of one integer divided by another integer. Examples include 0, 1, -2, ¾, -5.678, 355/113, etc. See also "Rational Number."
real numberA real number is a number that can be represented as a decimal number of unlimited precision. The set of real numbers can be represented by a number line of infinite length. We use the real numbers to count and measure our physical world. See also "Real Number."
revo-The nonstandard prefix "revo-" denotes a multiple of ten to the negative thirty-third power (10-33 = 1E-33 = 0.000 000 000 000 000 000 000 000 000 000 001).
Sacred RatioThe "Sacred Ratio" (symbol: φ {Greek lower case letter phi} ) is the irrational number that is one greater than its multiplicative inverse, i.e., φ = 1 + 1/φ = (1+5½)/2 = approximately 1.618 033 988 750. The ancient Egyptians discovered the "Sacred Ratio" which they used extensively in architecture. The ancient Greeks treasured φ as their "Golden Ratio." The ancient Egyptians discovered φ, which they honored as their "Sacred Ratio." The ancient Greeks treasured φ as their "Golden Ratio." The ratio φ is used extensively in art and architecture. See also "The Golden Mean" and "Golden Ratio."
scarcelyThe adverb "scarcely" means "only slightly more than a required minimum."
scoreThe noun and adjective "score" means "twenty (20)."
score and tenThe compound noun and adjective "score and ten" means "thirty (30)."
second1. The adjective, adverb, and noun "second (2nd or 2d)" is the standard name for "the ordinal number that follows first (1st)." "Second" corresponds with the cardinal number "two (2)." See also Number Names.
2. The noun "second" means "divided by sixty twice ((1/60)·(1/60) = 1/3,600)." In time measurement, a "second" is "one thirty-six-hundredth (1/3,600) of an hour" or "one eighty-six-thousand-four-hundredth (1/86,400) of a day." In angular measurement, a "second" (suffix symbol: -″ {double prime} ) is "one thirty-six-hundredth (1/3,600) of a degree (suffix symbol: {degree symbol} )" or "one one-million-two-hundred-ninety-six-thousandth (1/1,296,000) of a circle."
second bananaThe compound noun and adjective "second (2nd or 2d) banana" means "a subordinate person."
second cousinThe compound noun "second (2nd or 2d) cousin" means "an individual sharing a common pair of great-grandparents with the referenced individual."
second cousin once removedThe compound noun "second (2nd or 2d) cousin once (1-time) removed" means "the child of a second cousin"
second cousin twice removedThe compound noun "second (2nd or 2d) cousin twice (2-times) removed" means "the grandchild of a second cousin"
Second WorldThe compound noun and adjective "Second (2nd or 2d) World" means "the current and former communist nations of the world." See origin note at "Third World."
secondaryThe adjective and noun "secondary" means "second (2nd or 2d) in order or importance."
semi-The Latin-based numeric prefix "semi-" means "one half (1/2)."
semiThe noun and adjective "semi" means "a tractor and trailer combination freight truck (the tractor and trailer are the two (2) halves (1/2) of the truck.)" See also "eighteen-wheeler (18-wheeler)," "octodecicycle," and "semitrailer."
semiannualThe adjective "semiannual" means "recurring every one half (1/2) year or every six (6) months."
semicentennial1. The adjective and noun "semicentennial" means "recurring every fifty (50) years."
2. The adjective and noun "semicentennial" means "lasting fifty (50) years."
3. The noun and adjective "semicentennial" means "a fifty (50) year anniversary."
semidiurnalThe adjective "semidiurnal" means "recurring twice (2) per day."
semimonthlyThe adjective "semimonthly" means "recurring twice (2) per month."
semitrailerThe noun and adjective "semitrailer" means "a freight trailer designed to be towed by a tractor in a combination freight truck (the tractor and semitrailer are the two (2) halves (1/2) of the truck.)" See also "eighteen-wheeler (18-wheeler)," "octodecicycle," and "semi."
semiweeklyThe adjective "semiweekly" means "recurring twice (2) per week."
senary1. The adjective and noun "senary" means "sixth (6th) in order or importance."
2. The adjective "senary" means "having six (6) parts."
septe-The numeric prefix "septe-" me