GNU Collaborative International Dictionary of English

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  1.       

    Peristaltic , a. [Gr.  clasping and compressing, fr.  to surround, wrap up;  round +  to place, arrange: cf. F. péristaltique.] (Physiol.) Pertaining to a wormlike wave motion of the intestines, and by analogy, of other flexible tubular structures. In the body it is produced by a progressive contraction of the muscular fibers of their walls, forcing their contents onwards in the direction of the wave; as, peristaltic movement. -- Per`i*stal"tic*al*ly , adv.
    1913 Webster

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