/ Dictionary / Index M MRI: Meaning and Definition of Find definitions for: MRI Pronunciation: [key] magnetic resonance imaging: a noninvasive diagnostic procedure employing an MR scanner to obtain detailed sectional images of the internal structure of the body. magnetic resonance imager. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mri (Thesaurus) Mr. Fixit mridanga 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