pennsylvanian

• (1) تعریف: of or pertaining to Pennsylvania or its people.

• (2) تعریف: of, relating to, or designating the second coal-forming period of the Paleozoic Era, from approximately 320 million to 280 million years ago, when swamp forests were abundant and large reptiles appeared; Upper Carboniferous.

• (1) تعریف: a native or resident of Pennsylvania.

• (2) تعریف: the Pennsylvanian Period, or the rock formations that date from that time.