ulcerative colitis

noun Pathology.

1. chronic ulceration in the large intestine, characterized by painful abdominal cramps and profuse diarrhea containing pus, blood, and mucus.

n.

1. A chronic disease of unknown cause, characterized by ulceration of the colon and rectum with bleeding, mucosal crypt abscesses, and inflammatory pseudopolyps, often causing anemia, hypoproteinemia, and electrolyte imbalance.