/ Dictionary / Index N nephrolithotomy: Meaning and Definition of Find definitions for: neph•ro•li•thot•o•my Pronunciation: (nef"rō-li-thot'u-mē), [key] — pl. -mies. incision or opening of a kidney pelvis for removal of a calculus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nephrolith nephrology Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language