Synonyms and Antonyms for archean-eon

1. Archean eon (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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2. archean (adj.)

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

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3. 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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4. eon (n.)

(Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe

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5. eon (n.)

an immeasurably long period of time

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6. eon (n.)

the longest division of geological time

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