English adjective: proterozoic | |||
1. | proterozoic formed in the later of two divisions of the Precambrian era | ||
Samples | Proterozoic life forms. | ||
Similar | early | ||
Domain category | geology | ||
Antonyms | late, middle | ||
English noun: Proterozoic | |||
1. | Proterozoic (time) from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms | ||
Synonyms | Proterozoic aeon, Proterozoic eon | ||
Instance hypernym | aeon, eon | ||
Part meronym | Precambrian, Precambrian aeon, Precambrian eon, Precambrian period | ||