[pahy-lawr-uh s, -lohr-, pi-]
- the opening between the stomach and the duodenum.
Origin of pylorus
1605–15; < Late Latin < Greek pylōrós literally, gatekeeper
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pylorus
This is allowed by the relaxation of the ringlike muscles of the pylorus.A Civic Biology
George William Hunter
Like many other structural changes, it is usually found in the neighborhood of the pylorus.
Very considerable stenosis of the pylorus may be produced before the ulcer is completely cicatrized.
The pylorus is overlapped by a part of the liver, usually the lobus quadratus or the umbilical fissure.
The situation in which cancerous tumors of the pylorus can be felt varies considerably.
- the small circular opening at the base of the stomach through which partially digested food (chyme) passes to the duodenum
C17: via Late Latin from Greek pulōrus gatekeeper, from pulē gate + ouros guardian
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
Word Origin and History for pylorus
Online Etymology Dictionary, © 2010 Douglas Harper
- The passage at the lower end of the stomach that opens into the duodenum.
- A muscular or myovascular structure that opens or closes an orifice or lumen of an organ.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The passage at the lower end of the stomach that opens into the small intestine.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.