Word.ws English Dictionary

proterozoic

/ˌpɹɒt(ə)ɹəˈzəʊɪk/US/ˌpɹoʊt(ə)ɹrəˈzoʊɪk/

proterozoic is the alternative form of Proterozoic.

Adjective capitalized: Proterozoic

Proterozoic (not comparable)

  1. Of or relating to the geologic eon from 2,500 Ma to 541.0±1.0 Ma.

Proper noun capitalized: Proterozoic

Proterozoic

  1. The eon from 2,500 Ma to 541.0±1.0 Ma, the beginning of the Phanerozoic, marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life.

Origin of proterozoic

From protero- + -zoic.

Words that rhyme with proterozoic

Questions about proterozoic

What does proterozoic mean?
Proterozoic means of or relating to the geologic eon from 2,500 Ma to 541.0±1.0 Ma.
What is proterozoic the alternative form of?
Proterozoic is the alternative form of Proterozoic.
What part of speech is proterozoic?
Proterozoic can be an adjective or a proper noun.
How do you pronounce proterozoic?
Proterozoic is pronounced /ˌpɹoʊt(ə)ɹrəˈzoʊɪk/ (US).

Words near proterozoic in the dictionary

  1. proterothere
  2. proterotheriid
  3. proterotheriids
  4. proterotype
  5. proterotypes
  6. proterozoic
  7. proterrorist
  8. proters
  9. protervities
  10. protervity
  11. protesomal

Source and license

Adapted from Wiktionary: proterozoic (page history and authors); Proterozoic (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-Proterozoic.wav.

Cite this entry: “proterozoic.” Word.ws, https://word.ws/proterozoic. Based on Wiktionary, CC BY-SA 4.0.