mega-annum
/ˌmɛɡəˈænəm/
mega-annum noun: synonym of megayear: a period of 1 million years.
Noun
mega-annum (plural mega-annums or mega-anna)
- Synonym of megayear: a period of 1 million years.
- Holonyms: petasecond < giga-annum, gigayear < exasecond
- Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond < attosecond < femtosecond < picosecond < nanosecond < microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < day < week < megasecond < fortnight < month < year <...
- Synonyms:
- megayear
Synonyms of mega-annum
Forms of mega-annum
| plural | mega-annums |
|---|---|
| plural | mega-anna |
Origin of mega-annum
From mega- + annum.
Questions about mega-annum
- What does mega-annum mean?
- Mega-annum means synonym of megayear: a period of 1 million years.
- What part of speech is mega-annum?
- Mega-annum is a noun.
- How do you pronounce mega-annum?
- Mega-annum is pronounced /ˌmɛɡəˈænəm/.
- What is the plural of mega-annum?
- The plural of mega-annum is mega-annums.
Words near mega-annum in the dictionary
Source and license
Adapted from Wiktionary: mega-annum (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.
Last updated:
Cite this entry: “mega-annum.” Word.ws, https://word.ws/mega-annum. Based on Wiktionary, CC BY-SA 4.0.