1 Results for archean eon

หรือค้นหา: -archean eon-, *archean eon*
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WordNet (3.0)

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, Syn. Archeozoic, Archean eon, Archaeozoic aeon, Archeozoic eon, Archean aeon, Archaeozoic

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