Pennsylvanian

Other forms: Pennsylvanians

Definitions of Pennsylvanian
  1. noun
    a native or resident of Pennsylvania
    synonyms: Keystone Stater
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    type of:
    American
    a native or inhabitant of the United States
  2. adjective
    relating to or denoting the period from about 323 to 299 million years ago
  3. noun
    the period of geologic time from about 323 to 299 million years ago; the sixth period of the Paleozoic era
    synonyms: Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period
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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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