/ Dictionary / Index C catechol: Meaning and Definition of Find definitions for: cat•e•chol Pronunciation: (kat'i-kôl", -kol"), [key] — n. a colorless, crystalline, dihydroxyl derivative of benzene, CHO, the ortho isomer, used chiefly in photography, for dyeing, and as a reagent; pyrocatechol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. catechize catecholamine Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language