OCTAD

eight, VIII, eighter, eighter from Decatur, octad, ogdoad, octonary, octet

(noun) the cardinal number that is the sum of seven and one

Source: WordNet® 3.1


Etymology

Noun

octad (plural octads)

A group of eight things.

Synonym: octonary

(historical) hundred million = myriad myriad; 100,000,000 = 108 [from 16th c.]

Coordinate terms

• monad · duad, dyad · triad · tetrad · pentad · hexad · heptad · octad · ennead, nonad · decad, decade · hendecad · dodecad, duodecade

Source: Wiktionary


Oc"tad, n. Etym: [Gr. (Chem.)

Definition: An atom or radical which has a valence of eight, or is octavalent.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

28 May 2025

AIR

(noun) a distinctive but intangible quality surrounding a person or thing; “an air of mystery”; “the house had a neglected air”; “an atmosphere of defeat pervaded the candidate’s headquarters”; “the place had an aura of romance”


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