/ Dictionary / Index D Diuril: Meaning and Definition of Find definitions for: Di•ur•il Pronunciation: (dī'ur-il), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of chlorothiazide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diuril (Thesaurus) diuretic diurnal Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language