/ Dictionary / Index C carbonylic: Meaning and Definition of Find definitions for: car•bon•yl•ic Pronunciation: (kär"bu-nil'ik), [key] — adj. of, pertaining to, or characteristic of the carbonyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: carbonylic (Thesaurus) carbonyl group carborane Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language