Word Pronunciation & Dictionary

giga-annum

Word Rarity Very rare

Frequency: Zipf frequency 2.43 in modern English

Syllables: gi-ga-an-num
IPA

13

Scrabble Score

9

Letters

4

Syllables

6

Unique Chars

Meaning

noun

Synonym of gigayear: a billion years.

Example Sentences

"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)."
"We report here the sequencing and genomic analysis of the SDR of Ectocarpus, a brown alga that has been evolving independently from plants, animals, and fungi for over one giga-annum."
"Possible cyanobacteria from the Apex charts of western Australia, which have been dated at ~3.5 (giga-annums, or billions of years)."

Etymology

From giga- + annum.

Inflected Forms

giga-annums (plural)

Frequently Paired Words

gigaannum gigannum Ga

Synonyms

gigayear

Questions

What does giga-annum mean?: Synonym of gigayear: a billion years.
Where does giga-annum come from?: From giga- + annum.

How to pronounce giga-annum

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