Synonyms and Antonyms for archean | Synonym.com

Synonyms and Antonyms for archean

1. archean (adj.)

of or relating to the earliest known rocks formed during the Precambrian Eon

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2. Archean (n.)

the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life

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