/ Dictionary / Index N nephrolith: Meaning and Definition of Find definitions for: neph•ro•lith Pronunciation: (nef'ru-lith), [key] — n. Pathol. a renal calculus; kidney stone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nephrolith (Thesaurus) nephro- nephrolithotomy Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language