pylorus

[ pahy-lawr-uh s, -lohr-, pi- ]
/ paɪˈlɔr əs, -ˈloʊr-, pɪ- /

noun, plural py·lo·ri [pahy-lawr-ahy, -lohr-ahy, pi-] /paɪˈlɔr aɪ, -ˈloʊr aɪ, pɪ-/. Anatomy.

the opening between the stomach and the duodenum.

Origin of pylorus

1605–15; < Late Latin < Greek pylōrós literally, gatekeeper

Related forms

py·lor·ic [pahy-lawr-ik, -lor-, pi-] /paɪˈlɔr ɪk, -ˈlɒr-, pɪ-/, adjectivepost·py·lor·ic, adjectivepre·py·lor·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pylorus

British Dictionary definitions for pylorus

pylorus

/ (paɪˈlɔːrəs) /

noun plural -ri (-raɪ)

the small circular opening at the base of the stomach through which partially digested food (chyme) passes to the duodenum

Derived Forms

pyloric, adjective

Word Origin for pylorus

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

Medicine definitions for pylorus

pylorus

[ pī-lôrəs ]

n. pl. py•lo•ri (-lôrī′)

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.

Science definitions for pylorus

pylorus

[ pī-lôrəs, pĭ- ]

Plural pylori (pī-lôrī′, pĭ-)

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.