Word.ws English Dictionary

decamillennium

decamillennium noun: a period of time consisting of ten thousand years.

Noun

decamillennium (plural decamillennia or decamillenniums)

  1. (rare) A period of time consisting of ten thousand years.
    • A Millennium consists of one thousand years. / A Decamillennium is ten thousand years. / […] / A Centimillennium embraces a period of one hundred thousand years.1882, Nelson Loverin, Loverin’s Chart of Time, Centograph and Slate, page 37
    • There is most assuredly an occult “chronological system in Hebrew Scripture”—the Kabala being its warrant; there is in it “a system of weeks”—which is based on the archaic Indian system, which may still be found in the old Jyotisha.* And there are in it cycles of “the week of days,” of the “week of...1888, Helena Blavatsky, The Secret Doctrine: Anthropogenesis, pages 623–624

Examples of decamillennium in a sentence

  • And however it worked, it had to happen by the time of the decamillennium.” […] “This is a terrible thing, isn’t it?1993, Iain Banks, Against a Dark Background, Orbit Books, pages 34, 82:
  • The Western scholars measure their periods of the various Maṇḍala in terms of decades, while some Indian scholars go to the other extreme and measure them in terms of millenniums and decamillenniums.2000, Shrikant G. Talageri, The Rigveda: A Historical Analysis, Aditya Prakashan, →ISBN, page 77:

Forms of decamillennium

pluraldecamillennia
pluraldecamillenniums
alternative formdecimillennium

Origin of decamillennium

From deca- + millennium.

Questions about decamillennium

What does decamillennium mean?
Decamillennium means a period of time consisting of ten thousand years.
How do you use decamillennium in a sentence?
And however it worked, it had to happen by the time of the decamillennium.” […] “This is a terrible thing, isn’t it?
What part of speech is decamillennium?
Decamillennium is a noun.
What is the plural of decamillennium?
The plural of decamillennium is decamillennia.

Words near decamillennium in the dictionary

  1. decametre
  2. decametres
  3. decametric
  4. decamillennia
  5. decamillennial
  6. decamillennium
  7. decamillenniums
  8. decamillion
  9. decamillionaire
  10. decamillionaires
  11. decamillions

Source and license

Adapted from Wiktionary: decamillennium (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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