Etymologically

millennium

Etymology and origin of the English word millennium

Pronunciation

  • IPA: /mɪˈlɛnɪəm/[1]

Etymology

It is borrowed from New Latin millennium,[2][3][4][5][6] from Latin mīlle (“thousand”) + annus (“year”),[2][3][4][5] formed on the model of Latin biennium (“two-year period”) and triennium.[3][4][5][6]

Earliest recorded meaning

The thousand-year period during which, according to one reading of Revelation 20:1–5, Christ will reign in person on earth (before 1638).[7][3][4][5][6]

Semantic evolution

The theological sense came first; the general meaning, a period of a thousand years, is recorded by 1711, and the word was also used of a thousandth anniversary.[7][3][4] From 1820 it was used figuratively of a hoped-for period of happiness and good government.[7][2][5] The meaning “the year 2000” is attested by 1970.[4][1] The adjective millennial first referred to the prophesied millennium (1664) and generally to a thousand years from 1807.[3]

Timeline

  • before 1638 – Christ's thousand-year reign.[7][3]
  • 1664 – millennial.[3]
  • before 1711 – a period of a thousand years.[7][3][4]
  • 1820 – figuratively, a golden age.[7]
  • 1970 – the year 2000.[4]

Modern meaning

Noun

  1. A span of one thousand years, especially one counted from the beginning of the Christian era.
  2. The thousand-year period described in Revelation 20, during which Christ is to reign on earth.
  3. A hoped-for period of joy, peace, prosperity and justice.
  4. A thousandth anniversary.
  5. The point at which one thousand-year period ends and another begins, especially the year 2000.

Word family

  • millennial
  • millennialism
  • millennialist
  • millennially
  • millenarian
  • millenary
  • biennial
  • annual
  • million
  • mile

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  3. ^ a b c d e f g h i Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  4. ^ a b c d e f g h Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d e Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  7. ^ a b c d e f Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Millennium.” Etymologically, 10 Oct. 2026, etymologically.com/en/millennium. Accessed 11 Oct. 2026.

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