/ Dictionary / Index S sulfuryl group: Meaning and Definition of Find definitions for: sul'furyl group" Pronunciation: [key] — Chem. Chem. the bivalent group, SO, derived from sulfuric acid. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sulfuryl chloride sulindac 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