Definition of archean
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 adjective satellite - of or relating to the earliest known rocks formed during the Precambrian Eon
source: WordNet 3.0
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archean, archaean, archean eon, archon, arcane, argean, archenemy, archegony, archangel, archean aeon, arschin, arcanum, archine, archaism, archegonium, aragon, argoan, arcsin, archaicism, arshine
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