noun. the process of wavelike muscle contractions of the alimentary tract that moves food along.
1. Noun, singular or mass Muscles in the stomach help squeeze digested food into the small intestine a little at a time through a process called peristalsis. 2. Verb, non-3rd person singular present The active ingredient in cassia tea, referred to as senna glycosides or sennosides, promotes peristalsis in the colon to increase stool elimination.