Wiktionary
catastalsis
n. (context biology English) The rhythmic contraction and relaxation of the muscle of the intestines. It resembles ordinary peristalsis but is not preceded by a zone of inhibition.
Wikipedia
Catastalsis
Catastalsis is the rhythmic contraction and relaxation of the muscle of the intestines. It resembles ordinary peristalsis but is not preceded by a wave of inhibition.