/ Dictionary / Index M ma: Meaning and Definition of Find definitions for: ma Pronunciation: (mä), [key] — n. Informal. mother. MA Pronunciation: [key] Massachusetts (approved esp. for use with zip code). mental age. mA Pronunciation: [key] milliampere; milliamperes. M.A. Pronunciation: [key] See mental age. Military Academy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ma (Thesaurus) M-16 MAA Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language