Definition of millennium in English:


Syllabification: mil·len·ni·um
Pronunciation: /məˈlenēəm

noun (plural millennia /-ˈlenēə/ or millenniums)

1A period of a thousand years, especially when calculated from the traditional date of the birth of Christ.
More example sentences
  • On the other hand, it is also rather weak on the later centuries of the first millennium of the Christian era.
  • Some of her archaeologist husband's finds can be seen in the museum, which is a must if you want to grasp the sophistication of Syrian art and civilisation of the two millenniums before Christ.
  • What does an Oriental seer, born in the middle of the first millennium before Christ among historical circumstances and a culture so different from our own, have to offer such very modern thinkers?
1.1 (the millennium) Christian Theology The prophesied thousand-year reign of Christ at the end of the age (Rev. 20:1-5).
More example sentences
  • They viewed the Civil War as the beginning of the ‘wars and rumors of wars’ that were prophesied would proceed the millennium.
  • It takes its name from the early Christians' anticipation of Christ's Second Coming, to be followed by a millennium, or thousand-year reign of peace and tranquillity.
  • But we discover that the commission given in Matthew 28: 18-20 was for their ministry in the millennium.
1.2 (the millennium) A utopian period of good government, great happiness, and prosperity.
More example sentences
  • No narrow patriotism of race, country or religion will stand in the way of the millennium of universal peace.
2An anniversary of a thousand years: the millennium of the Russian Orthodox Church
2.1 (the millennium) The point at which one period of a thousand years ends and another begins.
More example sentences
  • Does the millennium begin with the year ending in zero or in one?
  • With the millennium approaching, his aim was to persuade the human population of the entire planet that, for 24 hours, they should stop killing each other.
  • As we approach the millennium it seems an appropriate time for OLOC to take stock, to reflect and review where we want to go and how.


mid 17th century: modern Latin, from Latin mille 'thousand', on the pattern of biennium.


The spelling of millennium is less difficult if one remembers that it comes ultimately from two Latin words containing double letters: mille, ‘thousand,’ and annum, ‘year.’.

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