- a state in the eastern United States. 45,333 sq. mi. (117,410 sq. km). Capital: Harrisburg. Abbreviations: PA (for use with zip code), Pa., Penn., Penna.
- 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)