/ Dictionary / Index D diuretic: Meaning and Definition of Find definitions for: di•u•ret•ic Pronunciation: (dī"u-ret'ik), [key] — adj. increasing the volume of the urine excreted, as by a medicinal substance. —n. a diuretic medicine or agent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diuretic (Thesaurus) diuresis Diuril 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