Word.ws English Dictionary

decimillennium

decimillennium is the alternative form of decamillennium.

Meaning of decamillennium

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

Forms of decimillennium

pluraldecimillennia
pluraldecimillenniums

Questions about decimillennium

What is decimillennium the alternative form of?
Decimillennium is the alternative form of decamillennium.

Words near decimillennium in the dictionary

  1. decimetric
  2. decimic
  3. decimicron
  4. decimil
  5. decimillennia
  6. decimillennium
  7. decimillenniums
  8. decimolar
  9. decimole
  10. decimoles
  11. decimosexto

Source and license

Adapted from Wiktionary: decimillennium (page history and authors); 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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Cite this entry: “decimillennium.” Word.ws, https://word.ws/decimillennium. Based on Wiktionary, CC BY-SA 4.0.