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The example sentences of ARCHEAN in videos (1 in total of 4)

A Brief History of Geologic Time English (null)
then adverb 2.5 cardinal number billion cardinal number years noun, plural ago adverb , the determiner archean proper noun, singular gave verb, past tense way noun, singular or mass to to the determiner proterozoic proper noun, singular eon proper noun, singular , meaning noun, singular or mass ‘ earlier adverb, comparative
Special thanks to The Free Dictionary and azquotes for providing us with the information used in this web page

Definition and meaning of ARCHEAN

What does "archean mean?"
archean

/ärˈkēən/

archean

adjective
of aeon that constitutes earlier or middle part of Precambrian.
noun
Archaean aeon or system of rocks deposited during it.

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