Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun proterozoic

1 sense of proterozoic

Sense 1
Proterozoic, Proterozoic eon, Proterozoic aeon -- (from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms)
       INSTANCE OF=> eon, aeon -- (the longest division of geological time)

Antonyms of adj proterozoic

1 sense of proterozoic

Sense 1
proterozoic -- (formed in the later of two divisions of the Precambrian era; "proterozoic life forms")

INDIRECT (VIA late, early) -> middle -- (between an earlier and a later period of time; "in the middle years"; "in his middle thirties")
INDIRECT (VIA early, middle) -> late -- (being or occurring at an advanced period of time or after a usual or expected time; "late evening"; "late 18th century"; "a late movie"; "took a late flight"; "had a late breakfast")

Similarity of adj proterozoic

1 sense of proterozoic

Sense 1
proterozoic -- (formed in the later of two divisions of the Precambrian era; "proterozoic life forms")
       => early (vs. middle) (vs. late) -- (at or near the beginning of a period of time or course of events or before the usual or expected time; "early morning"; "an early warning"; "early diagnosis"; "an early death"; "took early retirement"; "an early spring"; "early varieties of peas and tomatoes mature before most standard varieties")