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definition of the word archaean

by the Wiktionnary

Archaean (comparative more Archaean, superlative most Archaean)

Positive
Archaean

Comparative
more Archaean

Superlative
most Archaean

  1. (geology) of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first continents and oceans and the emergence of simple life

Archaean

  1. (geology) the Archaean eon

Retrieved from "http://en.wiktionary.org/wiki/Archaean"
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