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millennium

noun [C]
 
 
/mɪˈlen.i.əm/ (plural millennia or millenniums)

Definition

C2 a period of 1,000 years, or the time when a period of 1,000 years ends: The corpse had lain preserved in the soil for almost two millennia. How did you celebrate the Millennium? → Compare centuryDecades, centuries and the millennium millennial
 
 
/-əl/ adjective
Decades, centuries and the millennium
(Definition of millennium noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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