millennium.
A period of time consisting of one thousand years.
Meaning & usage
A period of time consisting of one thousand years.
The year in which one period of one thousand years ends and another begins, especially the year 2000.
A huge fireworks display was put on in Sydney to celebrate the millennium.
Any long (and possibly endless) era of universal happiness, peace, and prosperity, predicted by various people to come about someday.
expecting a millennium
Where this word comes from
Etymology tree Proto-Indo-European *sem- Proto-Indo-European *sm̥- Proto-Indo-European *-is Proto-Indo-European *-h₂ Proto-Indo-European *-ih₂ Proto-Indo-European *smih₂ Proto-Indo-European *ǵʰes- Proto-Indo-European *-lom Proto-Indo-European *ǵʰéslom ▲ Proto-Indo-European *-ih₂ Proto-Indo-European *ǵʰéslih₂ Proto-Indo-European *smih₂ǵʰéslih₂ Proto-Italic *smīɣeslī Latin mīlle Proto-Indo-European *h₂et- Proto-Indo-European *-nós Proto-Indo-European *h₂etnós Proto-Italic *atnos? Latin annus Latin annīs Latin mīllennis Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -iusnom. Latin -ium Late Latin mīllenniumbor. English millennium From Late Latin mīllennium, from Latin mīllennis (“1000-year”) + -ium (forming abstract nouns).
The period of one thousand years during which Christ will reign on earth (according to Millenarianist interpretations).
usher in the millennium
The Nazis' concept for the so-called Thousand-Year Reich of their infallible Leader has been described as but a pale pseudoreligious false-prophet imitation of the Christian concept of the millennium of Christ regnant.
A particular long (and possibly endless) era of universal happiness, peace, and prosperity, predicted by various people to come about someday.
usher in the millennium
Where this word comes from
Etymology tree Proto-Indo-European *sem- Proto-Indo-European *sm̥- Proto-Indo-European *-is Proto-Indo-European *-h₂ Proto-Indo-European *-ih₂ Proto-Indo-European *smih₂ Proto-Indo-European *ǵʰes- Proto-Indo-European *-lom Proto-Indo-European *ǵʰéslom ▲ Proto-Indo-European *-ih₂ Proto-Indo-European *ǵʰéslih₂ Proto-Indo-European *smih₂ǵʰéslih₂ Proto-Italic *smīɣeslī Latin mīlle Proto-Indo-European *h₂et- Proto-Indo-European *-nós Proto-Indo-European *h₂etnós Proto-Italic *atnos? Latin annus Latin annīs Latin mīllennis Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -iusnom. Latin -ium Late Latin mīllenniumbor. English millennium From Late Latin mīllennium, from Latin mīllennis (“1000-year”) + -ium (forming abstract nouns).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.