noun, plural per·i·stal·ses [per-uh-stawl-seez, -stal-] /ˌpɛr əˈstɔl siz, -ˈstæl-/. Physiology.
the progressive wave of contraction and relaxation of a tubular muscular system, especially the alimentary canal, by which the contents are forced through the system.
Origin of peristalsis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
noun plural -ses (-siːz)
physiol the succession of waves of involuntary muscular contraction of various bodily tubes, esp of the alimentary tract, where it effects transport of food and waste products
Word Origin for peristalsis
C19: from New Latin, from peri- + Greek stalsis compression, from stellein to press together
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
1859, Modern Latin peristalsis; see peristaltic.
Online Etymology Dictionary, © 2010 Douglas Harper
n. pl. per•i•stal•ses (-sēz)
The wavelike muscular contractions of the intestine or other tubular structure that propel the contents onward by alternate contraction and relaxation.vermicular movement
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The wavelike muscular contractions in tubular structures, especially organs of the digestive system such as the esophagus and the intestines. Peristalsis is characterized by alternate contraction and relaxation, which pushes ingested food through the digestive tract towards its release at the anus. Worms propel themselves through peristaltic movement.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The wavelike, involuntary muscular contractions that move food through the digestive system.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.