/ Dictionary / Index M MCAT: Meaning and Definition of Find definitions for: MCAT Pronunciation: [key] Medical College Admission Test. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. McAllen McAuliffe Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language