/ Dictionary / Index M Massachusetts: Meaning and Definition of Find definitions for: Mas•sa•chu•setts Pronunciation: (mas"u-ch'sits), [key] — n. a state in the NE United States, on the Atlantic coast. 5,737,037; 8257 sq. mi. (21,385 sq. km). Cap.: Boston. Abbr.: MA (for use with zip code), Mass. Massachusett. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: massachusetts (Thesaurus) Massachusett Massachusetts ballot 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