Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or relating to Pennsylvania.
  • adjective Of, relating to, or being the period of geologic time from about 318 to 299 million years ago, the sixth period of the Paleozoic Era. The Pennsylvanian Period is characterized by the appearance of the first reptiles and widespread swamp forests.
  • noun A native or resident of Pennsylvania.
  • noun The Pennsylvanian Period.

from The Century Dictionary.

  • Of or pertaining to Pennsylvania, one of the Middle States of the United States, lying south of New York and west of New Jersey.
  • noun A native or an inhabitant of Pennsylvania.

from the GNU version of the Collaborative International Dictionary of English.

  • proper noun The geological period from 280 million to 310 million years ago; -- it was characterized by a warm climate and abundance of swampy land.
  • proper noun A resident of the state of Pennsylvania.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An inhabitant or a resident of the state of Pennsylvania.
  • noun geology Any of the three Pennsylvanian epochs.
  • adjective geology Of any of the three geologic epochs (lower, middle and upper) within the Carboniferous period from 318 to 299 million years ago; marked by a high oxygen atmosphere and the rise of reptiles and winged insects.
  • adjective Of, or pertaining to the state of Pennsylvania.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun from 310 million to 280 million years ago; warm climate; swampy land
  • noun a native or resident of Pennsylvania

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[After Pennsylvania.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Pennsylvania +‎ -an

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