/ Dictionary / Index G G.S.C.: Meaning and Definition of Find definitions for: G.S.C. Pronunciation: [key] General Staff Corps. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. GSA G7 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