We found 2 definitions of eoarchean from 1 different sources.
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What does eoarchean mean?
Wiktionary
eoarchean (Noun) The Eoarchean era.
eoarchean (Adjective) Of a geologicera within the Archaeaneon from about 4600 to 3600 million years ago; the first single- celled life began at this time.
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