a state in the S central US: consists of plains in the west, rising to mountains in the southwest and east; important for oil. Capital: Oklahoma City. Pop: 3 511 532 (2003 est). Area: 181 185 sq km (69 956sq miles)
Abbreviation: Okla. or (with zip code) OK
Oklahoma in American English
(ˌoʊkləˈhoʊmə)
state of the SC U.S.: admitted, 1907; 68,667 sq mi (177,847 sq km); pop. 3,451,000; cap. Oklahoma City