Word.ws English Dictionary

megannum

/ˌmɛɡˈænəm/

megannum is the alternative form of mega-annum.

Meaning of mega-annum

Noun

mega-annum (plural mega-annums or mega-anna)

  1. Synonym of megayear: a period of 1 million years.
    • Holonyms: petasecond < giga-annum, gigayear < exasecond
    Synonyms:
    megayear

Forms of megannum

pluralmegannums

Questions about megannum

What is megannum the alternative form of?
Megannum is the alternative form of mega-annum.
How do you pronounce megannum?
Megannum is pronounced /ˌmɛɡˈænəm/.

Words near megannum in the dictionary

  1. meganewton
  2. meganewtons
  3. meganiche
  4. meganiches
  5. Meganisi
  6. megannum
  7. megannums
  8. meganovel
  9. meganovels
  10. meganterid
  11. meganterids

Source and license

Adapted from Wiktionary: megannum (page history and authors); 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.

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Cite this entry: “megannum.” Word.ws, https://word.ws/megannum. Based on Wiktionary, CC BY-SA 4.0.