/ Dictionary / Index D diacetic acid: Meaning and Definition of Find definitions for: di'a•ce'tic ac'id Pronunciation: (dī'u-sē'tik, -set'ik, dī"-), [key] — Chem. Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diacaustic diacetone alcohol Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language