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Table of Contents
  • 1. proterozoic
  • 2. Proterozoic
Table of Contents
  • 1. proterozoic
  • 2. Proterozoic
Antonyms

1. proterozoic

adjective. formed in the later of two divisions of the Precambrian era.

Antonyms

  • late

2. Proterozoic

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

Synonyms

  • Precambrian period
  • Precambrian
  • Precambrian eon
  • Proterozoic aeon
  • Proterozoic eon
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