Word.ws English Dictionary

giga-annums

giga-annums is the plural of giga-annum.

Meaning of giga-annum

Noun

giga-annum (plural giga-annums)

  1. Synonym of gigayear: a billion years.
    • Geophysicists today estimate the earth’s age to be 4.5–4.6 Ga (giga-annums = 1 x 10⁹ years) based on data from lead isotopes (Dalrymple 403).2000, A. S. Weber, Nineteenth-Century Science: An Anthology, →ISBN, page 387
    Synonyms:
    gigayear

Questions about giga-annums

What is giga-annums the plural of?
Giga-annums is the plural of giga-annum.

Words near giga-annums in the dictionary

  1. gig-mills
  2. giga-
  3. giga-amp
  4. giga-amps
  5. giga-annum
  6. giga-annums
  7. giga-becquerel
  8. giga-joule
  9. giga-joules
  10. giga-ohm
  11. giga-ohms

Source and license

Adapted from Wiktionary: giga-annums (page history and authors); giga-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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