'Peristalsis' definitions:

Definition of 'peristalsis'

noun

The process of wavelike muscle contractions of the alimentary tract that moves food along [syn: peristalsis, vermiculation] [ant: anastalsis]

From: GCIDE

Peristalsis \Per`i*stal"sis\, n. [NL. See Peristaltic.] (Physiol.) Peristaltic contraction or action. [1913 Webster]