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1. (adj.) Pennsylvanian
of or pertaining to the state of Pennsylvania.
2. Pennsylvanian
of or pertaining to a period of the Paleozoic Era, occurring from about 310 to 280 million years ago and characterized by warm climates, swampy land areas, and the development of insects and reptiles: sometimes considered as an epoch of the Carboniferous Period.
3. (n.) Pennsylvanian
a native or inhabitant of Pennsylvania.
4. Pennsylvanian
the Pennsylvanian Period or System.
Etymology: (1675–85)
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| Definition of 'Pennsylvanian' |
Princeton's WordNet |
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1. (noun) Pennsylvanian, Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period
from 310 million to 280 million years ago; warm climate; swampy land
2. (noun) Pennsylvanian, Keystone Stater
a native or resident of Pennsylvania
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Definitions of Pennsylvanian 
