Quaternary period

/ˌkwɑdərˈnɛri ˌpɪriəd/
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Other forms: Quaternary periods

Definitions of Quaternary period
  1. noun
    the period of geologic time starting about 2.6 million years ago; the current Cenozoic period
    synonyms: Age of Man, Quaternary
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    example of:
    geological period, period
    a unit of geological time during which a system of rocks formed
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