The word for that is either "intestinal" or "gastrointestinal." Intestinal means related to the intestines. Gastrointestinal is a more general term that can refer to either the intestines or the stomach.
Enterorrhaphy is the medical term meaning surgical suture of the intestine. A related term, enteroplasty, means surgical repair of the intestine.
Gastroenteralgia is the medical term meaning pain in the stomach and intestine.
Enterectomy
Flatus = gas in the intestine
baoninam
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Enteropathy is any abnormal condition of the small intestine.
Hypocapnia is the medical term meaning a deficiency in carbon dioxide levels in the blood. This can occur due to hyperventilation or certain medical conditions affecting lung function.
Enteral means pertaining to the small intestine.
Diverticulitis is the term used to describe an inflamed diverticulum.
iritis
Chondromalacia patella