/ Dictionary / Index T trichloroacetaldehyde: Meaning and Definition of Find definitions for: tri•chlo•ro•ac•e•tal•de•hyde Pronunciation: (trī-klôr"ō-as"i-tal'du-hīd", -klōr"-), [key] — n. Chem. chloral (def. 1). Also called tri&syl;chlo&prim;roace&prim;tic ac&prim;id al&prim;dehyde. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trichloride trichloroacetic acid Related Content Daily Word Quiz: ravenous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language