/ Dictionary / Index T trichlorophenoxyacetic acid: Meaning and Definition of Find definitions for: tri•chlo'ro•phe•nox•y•a•ce'tic ac'id Pronunciation: (trī-klôr'ō-fu-nok"sē-u-sē'tik, -set'ik, -klōr'-, -klôr"-, -klōr"-), [key] — Chem. Chem. a light-tan, water-insoluble solid, CHClO, used chiefly for killing weeds. Also called 2,4,5-T. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trichloronitromethane tricho- Related Content Daily Word Quiz: abscond Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language