/ Dictionary / Index C chlorthalidone: Meaning and Definition of Find definitions for: chlor•thal•i•done Pronunciation: (klôr-thal'i-dōn", klōr-), [key] — n. Pharm. a sulfonamide diuretic, CHClNOS, used in the management of hypertension. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: chlorthalidone (Thesaurus) chlortetracycline Chlor-Trimeton Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language