Library / English Dictionary

    PROTEROZOIC AEON

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    From 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organismsplay

    Synonyms:

    Proterozoic; Proterozoic aeon; Proterozoic eon

    Classified under:

    Nouns denoting time and temporal relations

    Instance hypernyms:

    aeon; eon (the longest division of geological time)

    Holonyms ("Proterozoic aeon" is a part of...):

    Precambrian; Precambrian aeon; Precambrian eon; Precambrian period (the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago)

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