Definition of
proterozoic has definitions from the field of geology
1
[ adjective ] (geology) formed in the later of two divisions of the Precambrian era

Examples

"proterozoic life forms"

Related terms

geology early

2
[ noun ] (geology) from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

Synonyms

proterozoic_aeon proterozoic_eon Preoterozoic_era

Related terms

eon era Precambrian

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Similar Spelling

Proterochampsa

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