/ Dictionary / Index A acetaldol: Meaning and Definition of Find definitions for: ac•e•tal•dol Pronunciation: (as'i-tal"dôl, -dol), [key] — n. Chem. aldol (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acetaldol (Thesaurus) acetaldehyde acetamide Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language