(noun, adjective)


1. Of, or pertaining to the state of Pennsylvania.

2. (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.


1. from 310 million to 280 million years ago; warm climate; swampy land

Definition categories: time

2. a native or resident of Pennsylvania

Definition categories: person, american