/ Dictionary / Index G GMAT: Meaning and Definition of Find definitions for: GMAT Pronunciation: [key] Graduate Management Admissions Test. Greenwich Mean Astronomical Time. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. G.M. and S. Gmc Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language