/ Dictionary / Index M Montana: Meaning and Definition of Find definitions for: Mon•tan•a Pronunciation: (mon-tan'u), [key] — n. a state in the NW United States. 786,690; 147,138 sq. mi. (381,085 sq. km). Cap.: Helena. Abbr.: MT (for use with zip code), Mont. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: montana (Thesaurus) Montalvo montane Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language