Meaning of hydronephrosis

hy•dro•ne•phro•sis

Pronunciation: (hī"drō-nu-frō'sis), [key]
— n. Pathol.
  1. dilation of the branches and pelvic cavity of the kidney, caused by an accumulation of urine resulting from obstruction of normal outflow.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: