ANTIPERISTALTIC, in Anatomy, a Motion of the Intestines contrary to the Peristaltic Motion. See PERISTALTIC. The Peristaltic Motion is a Contraction of the Fibres of the Intestines from above, downwards; and the Antiperistaltic Motion is their Contraction from below, upwards. See INTESTINES. The Word is derived from the Greek ἀντί, against, περί, about, and στάλλω, that which has the Power of compressing. See VERMICULAR.
