/ Dictionary / Index G Gantrisin: Meaning and Definition of Find definitions for: Gan•tri•sin Pronunciation: (gan'tru-sin), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of sulfisoxazole. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gantrisin (Thesaurus) gantlope gantry Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language