Hydronephrosis

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Hydronephrosis \Hy`dro*ne*phro"sis\, n. [NL., Gr. "y`dwr water +
     ? a kidney.] (Med.)
     An accumulation of urine in the pelvis of the kidney,
     occasioned by obstruction in the urinary passages.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  hydronephrosis
       n : accumulation of urine in the kidney because of an
           obstruction in the ureter