/ Dictionary / Index M mitral: Meaning and Definition of Find definitions for: mi•tral Pronunciation: (mī'trul), [key] — adj. of or resembling a miter. of, pertaining to, or situated near the mitral valve of the heart. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mitral (Thesaurus) mitrailleuse* mitral insufficiency Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language