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Noun: Pennsylvanian  ,pen-sul'vey-nee-un or ,pen-sul'veyn-yun
  1. A native or resident of Pennsylvania
    - Keystone Stater
     
  2. The period from 310 million to 280 million years ago; characterized by warm climate and swampy land
    - Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period

Derived forms: Pennsylvanians

Type of: American, geological period, period

Part of: Carboniferous, Carboniferous period

Encyclopedia: Pennsylvanian