Also found in: Medical.
n, pl -ses (-siːz)
(Physiology) a downward wave of contraction occurring in the intestine during digestion. See also peristalsis
[C20: New Latin, from dia- + (peri)stalsis]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the contraction of the alimentary canal in a downward direction as part of peristalsis.See also: Bodily Functions
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