[ dek-eyd; British also duh-keyd ]
/ ˈdɛk eɪd; British also dəˈkeɪd /


a period of ten years: the three decades from 1776 to 1806.
a period of ten years beginning with a year whose last digit is zero: the decade of the 1980s.
a group, set, or series of ten.

Origin of decade

1425–75; late Middle English < Middle French < Late Latin decad- (stem of decas) < Greek dekad- (stem of dekás) group of ten, equivalent to dék(a) ten + -ad- -ade2


half-dec·ade, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for decade

British Dictionary definitions for decade

/ (ˈdɛkeɪd, dɪˈkeɪd) /


a period of ten consecutive years
a group or series of ten

Derived forms of decade

decadal, adjective

Word Origin for decade

C15: from Old French, from Late Latin decad-, decas, from Greek dekas, from deka ten
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012