- 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. 2018
Examples from the Web for peristalsis
Otherwise, the peristalsis it awakens may only aggravate the danger.
It is on this roughage or waste material that intestinal movement or peristalsis depends.Health Through Will Power
James J. Walsh
If, however, cold increases pain and peristalsis, it should be abandoned.
In this stage the peristalsis of the gullet is sufficient to force the food through the cardia.
For is it not indicative of peristalsis that always when the upper parts of the gullet contract the lower parts dilate?
- 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
C19: from New Latin, from peri- + Greek stalsis compression, from stellein to press together
Word Origin and History for peristalsis
1859, Modern Latin peristalsis; see peristaltic.
Online Etymology Dictionary, © 2010 Douglas Harper
- The wavelike muscular contractions of the intestine or other tubular structure that propel the contents onward by alternate contraction and relaxation.vermicular movement
- 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.