Abnormal enlargement of the ureter caused by any blockage that prevents urine from draining into the bladder.
Distention of the ureter with urine, due to blockage from any cause. ... (05 Mar 2000) ... 
(hi″dro-u-re´tәr) distention of the ureter with fluid, due to obstruction.
Type: Term Pronunciation: hī′drō-yū-rē′ter, -yūr′ē-tĕr Synonyms: ureterectasia