/ Dictionary / Index U urolith: Meaning and Definition of Find definitions for: u•ro•lith Pronunciation: (yoor'u-lith), [key] — n. Pathol. a urinary calculus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: urolith (Thesaurus) urokinase urolithiasis Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language