/ Dictionary / Index G GSA: Meaning and Definition of Find definitions for: GSA Pronunciation: [key] See Girl Scouts of America. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gsa (Thesaurus) GS G.S.C. 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