/ Dictionary / Index T tolyl: Meaning and Definition of Find definitions for: tol•yl Pronunciation: (tol'il), [key] — adj. Chem. containing a tolyl group; cresyl. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Tolyatti tolyl group Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language