Definition of


  1. (adj, all) of or relating to the earliest known rocks formed during the Precambrian Eon

via WordNet, Princeton University

Synonyms of Archaean


Origin of the word Archaean

  1. "of the earliest geological age," 1872, from Gk. arkhaios "ancient," from arkhe "beginning" (see archon). more

via Online Etymology Dictionary, ©2001 Douglas Harper

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