Meaning of pyelonephrosis

py•e•lo•ne•phro•sis

Pronunciation: (pī"u-lō-nu-frō'sis, pī-el"ō-), [key]
— n. Pathol.
  1. any disease of the kidney and its pelvis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.