proterozoic

1. 1.

   from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

   SynonymsProterozoic eonProterozoic aeon

   Broadereon

   Part ofPrecambrian

1. 1.

   formed in the later of two divisions of the Precambrian era

   “proterozoic life forms”

   Similarearly

   geology

Other forms of proterozoic

plural

proterozoics·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about proterozoic

What does proterozoic mean?

proterozoic means "from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in proterozoic?

proterozoic has 4 syllables: pro-te-ro-zoic. The stress falls on "ro".

What is another word for proterozoic?

Close synonyms include Proterozoic eon, Proterozoic aeon. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is proterozoic a common word?

proterozoic is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.