|Pa, Penn, Penna, Abbreviation: PA a state of the northeastern US: almost wholly in the Appalachians, with the Allegheny Plateau to the west and a plain in the southeast; the second most important US state for manufacturing. Capital: Harrisburg. Pop: 12 365 455 (2003 est). Area: 116 462 sq km (44 956 sq miles)|
State in the northeastern United States bordered by Lake Erie and New York to the north; New Jersey to the east; Delaware, Maryland, and West Virginia to the south; and Ohio to the west. Its capital is Harrisburg, and its largest city is Philadelphia.
Note: One of the thirteen colonies.