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.
The gastrointestinal tract contains thousands of different bacteria in their gut flora. The human gastrointestinal tract consists of the stomach and intestines, and is divided into the upper and lower gastrointestinal tracts.