/ Dictionary / Index S sulfanilyl group: Meaning and Definition of Find definitions for: sulfan'ilyl group" Pronunciation: [key] — Chem. Chem. the para form of the group CHNOS–, derived from sulfanilic acid. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sulfanilyl sulfantimonide Related Content Daily Word Quiz: abyss Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language