What does a hyphen look like? â is a punctuation mark used to join words and to separate syllables of a single word.
Definition of gastrointestinal tract. medical. : the part of the digestive system that consists of the stomach and intestines.
1 The gastrointestinal tract or gastrointestinal system is the part of the digestive system that takes in food, digests it to extract energy and nutrients, and expels the remaining waste 2  : Gastrointestinal bleeding is any hemorrhage (loss of blood) in the gastrointestinal tract, from the pharynx to the rectum.