usa meaning and definition

USA noun

Definition of USA (noun)

1. North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
   • synonyms: America, the States, U.S., U.S.A., United States, United States of America, US
2. the army of the United States of America; the agency that organizes and trains soldiers for land warfare
   • synonyms: Army, U. S. Army, United States Army, US Army