English dictionary



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English adjective: proterozoic

1. proterozoic formed in the later of two divisions of the Precambrian era


SamplesProterozoic life forms.


Similarearly


Domain categorygeology


Antonymslate, middle


English noun: Proterozoic

1. Proterozoic (time) from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms


SynonymsProterozoic aeon, Proterozoic eon


Instance hypernymaeon, eon


Part meronymPrecambrian, Precambrian aeon, Precambrian eon, Precambrian period









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