District of Columbia

noun

1. a federal area in the eastern United States, on the Potomac, coextensive with the federal capital, Washington. 69 sq. mi. (179 sq. km). DC (for use with zip code), D.C.

District of Columbia

noun

1. Abbreviation: D.C..  DC. a federal district of the eastern US, coextensive with the federal capital, Washington. Pop: 564 326 (2003 est). Area: 178 sq km (69 sq miles)

District of Columbia

1. The district occupied entirely by Washington, D.C., the capital of the United States; bordered by Maryland to the north and Virginia to the south.

The District of Columbia was established by acts of Congress in 1790 and 1791 on a site selected by George Washington.