/ Dictionary / Index G G.P.O.: Meaning and Definition of Find definitions for: G.P.O. Pronunciation: [key] See See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gpo (Thesaurus) gpm GPS Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language