/ English Dictionary |
PROTEROZOIC EON
Pronunciation (US): | (GB): |
I. (noun)
Sense 1
Meaning:
From 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
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 eon" 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)