What is District of Columbia mean?

1. the district occupied entirely by the city of Washington; chosen by George Washington as the site of the nation's capital and created out of land ceded by Maryland and Virginia. Familiarity information: DISTRICT OF COLUMBIA used as a noun is very rare. read more

Washington, D.C. Washington, D.C., formally the District of Columbia and commonly referred to as "Washington", "the District", or simply "D.C.", is the capital of the United States. read more

A federal district of the eastern United States on the Potomac River between Virginia and Maryland. Coextensive with the city of Washington, it was established by congressional acts of 1790 and 1791 on a site selected by George Washington. read more