Pennsylvanian noun & adjective. [pɛnsɪl'veɪnɪǝn] L17.
[from PENNSYLVANIA + -AN.]
A. noun.
1. A native or inhabitant of Pennsylvania. L17.

2. Geology. The Pennsylvanian period; the system of rocks dating from this time. E20.
b. adjective.
1. Of, pertaining to, or characteristic of Pennsylvania or its people. L17.

2. Geology. Designating or pertaining to the period of the Palaeozoic era in N. America following the Mississippian and preceding the Permian, and corresponding to the Upper Carboniferous in Europe. L19.

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