octad

oc·tad
O1C3T1A1D2
UK/ˈɒktæd/US/ˈɑkˌtæd/

noun

A group of eight things.

Similar
octonaryeight8VIIIeightereighter from Decaturogdoadoctet
First used 16th c.Scrabble 8
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Meanings

nounoctad (plural octads)

plural octads

  1. A group of eight things.

    Synonyms: octonary

  2. historicalhundred million = myriad myriad; 100,000,000 = 10⁸First known use 16th c.

Synonyms & antonyms

nounA group of eight things.

Similar
octonary

More synonyms by meaning

nounthe cardinal number that is the sum of seven and one

Similar
eight8VIIIeightereighter from Decaturogdoadoctonaryoctet
Broader
digitfigure
Also see
achtbeineighteighter from decaturoctetoctonaryogdoad

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From oct- + -ad.

Full word history & related roots →
Cite this entry
APA

octad. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/octad

MLA

“octad.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/octad. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “octad,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/octad.

Source: octad on Wiktionary, CC BY-SA 4.0.