What does Proterozoic mean?

Definitions for Proterozoic
ˌprɒt ər əˈzoʊ ɪk, ˌproʊ tər-Pro·tero·zoic

Here are all the possible meanings and translations of the word Proterozoic.

Princeton's WordNet

  1. Proterozoic, Proterozoic eon, Proterozoic aeonadjective

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

  2. proterozoicadjective

    formed in the later of two divisions of the Precambrian era

    "proterozoic life forms"


  1. Proterozoicadjective

    Of, or relating to the geologic eon from about 2,500 to 570 million years ago; comprises the Paleoproterozoic, Mesoproterozoic and Neoproterozoic eras; marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life.

  2. Proterozoicnoun

    The Proterozoic eon.


  1. Proterozoic

    The Proterozoic is a geological eon representing the time just before the proliferation of complex life on Earth. The name Proterozoic comes from Greek and means "earlier life". The Proterozoic Eon extended from 2,500 Ma to 542.0±1.0 Ma, and is the most recent part of the informally named "Precambrian" time. It is subdivided into three geologic eras: the Paleoproterozoic, Mesoproterozoic, and Neoproterozoic. The well-identified events of this eon were the transition to an oxygenated atmosphere during the Mesoproterozoic; several glaciations, including the hypothesized Snowball Earth during the Cryogenian period in the late Neoproterozoic; and the Ediacaran Period which is characterized by the evolution of abundant soft-bodied multicellular organisms.

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  1. Chaldean Numerology

    The numerical value of Proterozoic in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of Proterozoic in Pythagorean Numerology is: 7

Images & Illustrations of Proterozoic

  1. ProterozoicProterozoicProterozoicProterozoicProterozoic

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    a hypothetical description of a complex entity or process
    • A. model
    • B. endeavor
    • C. assault
    • D. drought

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