/ Dictionary / Index O Oklahoma: Meaning and Definition of Find definitions for: O•kla•ho•ma Pronunciation: (ō"klu-hō'mu), [key] — n. a state in the S central U.S. 3,025,266. 69,919 sq. mi. (181,090 sq. km). Cap.: Oklahoma City. Abbr.: OK (for use with zip code), Okla. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oklahoma (Thesaurus) Okla. Oklahoma City Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language