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archean

2 senses · Free VividLex dictionary · Thesaurus

1. adj. of or relating to the earliest known rocks formed during the Precambrian Eon Source: wordnet
2. n. the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life s. of or relating to the earliest known rocks formed during the Precambrian Eon Source: ecdict

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earliest formed eon known million Precambrian relating rocks years ago crust forms life organisms time unicellular

Word family

archebiosis arched archegonia archegonial archegoniate archegonium archegony archei

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