Added 9 October 2026
decade
/ˈdɛkeɪd/ noun
In Latin: decas, decennium Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about decade at Wordnik → Where our words come from →
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A group, set, or series of ten .mw-parser-output .defdate{font-size:smaller}, particularly:
a decade of soldiers
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A period of ten years , particularly such a period beginning with a year ending in 0 and ending with a year ending in 9.
The 1960s was a turbulent decade.
- A period of ten days, particularly those in the ancient Egyptian, Coptic, and French Revolutionary calendars.
Origin
From Middle English decade, from Old French decade, from Late Latin decādem (“(set of) ten”), from Ancient Greek δεκάς (dekás), from δέκα (déka, “ten”). In reference to a span of ten years, originally a clipping of the phrase decade of years. By surface analysis, dec- + -ade. Doublet of decad and dekad.
From Wiktionary, via Kaikki.org (CC BY-SA)