Definition of: United States of America

A federal republic of North America, including 50 states, and the District of Columbia, the Canal Zone, Puerto Rico, the Virgin Islands of the United States, American Samoa, Guam, Wake, and several other scattered islands of the Pacific; total area, about 3,720,407 square miles; capital, Washington, in the District of Columbia.
—conterminous United States The 48 contiguous States and the District of Columbia.
—continental United States The District of Columbia and the 49 States on the continent of North America. Also America, the States, United States: abbr. U.S.A., U.S., US.