/ Dictionary / Index G GG: Meaning and Definition of Find definitions for: GG Pronunciation: [key] gamma globulin. great gross. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. G.F.T.U. GGR Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language