Definition of archean eon
English to English noun - the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
source: WordNet 3.0
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archean eon, archean aeon, archean, archaean, archeozoic eon, arcane, archon, archegony, archangel, archenemy, archaeozoic aeon, archine, archegonium, aragon, argean, arc cosine, aricine, arschin, arcanum, arshine
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