millennium
/mɪˈleniəm/ noun [C] (plural millennia)Definition
› a period of 1000 years, often calculated from the date when Christ is thought to have been born
the Millennium › the change from the year 1999 to 2000 in the Western calendar: Where did you celebrate the Millennium?
(Definition of millennium noun from the Cambridge Learner's Dictionary
© Cambridge University Press)
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