millennium

A period of time consisting of one thousand years.countable

• But these seekers, too, are saved - by virtue of the inherited symbolic aids of society, the rites of passage, the grace-yielding sacraments, given to mankind of old by the redeemers and handed down through millenniums.
• How this happens no one really knows, despite the efforts of philosophers and psychologists over two and a half millennia to study the phenomenon.

The year in which one period of one thousand years ends and another begins, especially the year 2000.with-definite-article

• 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.archaic

• Near-synonym: utopia
• expecting a millennium

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.archaic

• Near-synonym: utopia
• usher in the millennium