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District of Columbia definition

District of Columbia

federal district of the U.S., on the N bank of the Potomac River: 61 sq mi (159 sq km); pop. 572,000; coextensive with the city of Washington: abbrev. DC or D.C.

Etymology: after Christopher Columbus

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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