/ Dictionary / Index A acyl: Meaning and Definition of Find definitions for: ac•yl Pronunciation: (as'il, -ēl), [key] — adj. Chem. containing the acyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acyl (Thesaurus) acyclovir acylate Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language