/ Dictionary / Index T thioacetic acid: Meaning and Definition of Find definitions for: thi'oace'tic ac'id Pronunciation: [key] — Chem. Chem. a yellow, fuming, pungent liquid, CHSO, used as a reagent and tear gas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thioacetic thio acid Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language