/ Dictionary / Index A acetylic: Meaning and Definition of Find definitions for: ac•e•tyl•ic Pronunciation: (as"i-til'ik), [key] — adj. of, pertaining to, or characteristic of the acetyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acetylic (Thesaurus) acetyl group acetylide Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language