Meaning of nephrolithotomy

neph•ro•li•thot•o•my

Pronunciation: (nef"rō-li-thot'u-mē), [key]
— pl. -mies.
  1. incision or opening of a kidney pelvis for removal of a calculus.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.