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Word: archaean
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Meaning:
Adjective:
- 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
Source: Wiktionary
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Proper noun:
- geology the Archaean eon.
Source: Wiktionary
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