Literally meaning: “constriction”
Origin: Anc Greek
περί-/peri- (=combining form meaning “around”)
+ στέλλω/stelo(=put in order, set, arrange) , ;alnchecking, constriction," related to stellein "to put in order, draw together
Peristalsis is a series of of involuntary muscle contractions and relaxations that occur throughout the digestive tract in order to move food along it.