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Added 9 October 2026

hebdomad

/ˈhɛbdəmæd/ noun

Latin root: hebdomada Wiktionary

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about hebdomad at Wordnik → Where our words come from →

A group of seven.
A period of seven days; a week.
A group of seven world-creating archons (supernatural beings) often regarded as somewhat hostile; also, a term of address for the Demiurge (“a being sometimes seen as the creator of evil”).

Origin

From Late Latin hebdomada (“number seven; group of seven; seven days”), hebdomas (“number seven; seven days; seventh day”), from Ancient Greek ἑβδομάς (hebdomás, “group of seven, especially seven days or seven years”), from ἕβδομος (hébdomos, “seventh”) + -ᾰ́ς (-ắs, suffix forming abstract nouns of number from numerals). The word is cognate with French hebdomadaire, hebdo (“weekly periodical”), hebdomadairement (“weekly”), Portuguese hebdomadário (“weekly periodical”), Spanish hebdomadario (“weekly; weekly periodical; hebdomadary”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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