I. -nyən, -nēən adjective
Usage: usually capitalized
Etymology: Pennsylvania, state of the United States + English -an
1. : of, relating to, or characteristic of Pennsylvania or Pennsylvanians
2.
a. : of or relating to the Paleozoic period between the Mississippian and Permian
b. : of or relating to the system formed during this period which contains most of the coal of the United States east of the Great Plains — see geologic time table
II. noun
( -s )
1. capitalized : a native or resident of the state of Pennsylvania
2. usually capitalized : the Pennsylvanian period or system