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pylorus

[pahy-lawr-uh s, -lohr-, pi-]
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noun, plural py·lo·ri [pahy-lawr-ahy, -lohr-ahy, pi-] /paɪˈlɔr aɪ, -ˈloʊr aɪ, pɪ-/. Anatomy.
  1. the opening between the stomach and the duodenum.

Origin of pylorus

1605–15; < Late Latin < Greek pylōrós literally, gatekeeper
Related formspy·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. 2018

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British Dictionary definitions for pylorus

pylorus

noun plural -ri (-raɪ)
  1. the small circular opening at the base of the stomach through which partially digested food (chyme) passes to the duodenum
Derived Formspyloric, adjective

Word Origin

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

n.

1610s, from Late Latin pylorus "the lower orifice of the stomach," from Greek pyloros, literally "gatekeeper, porter," from pyle "gate" (see pylon) + ouros "watcher, guardian" (see warrant (n.)). Related: Pyloric.

Online Etymology Dictionary, © 2010 Douglas Harper

pylorus in Medicine

pylorus

(pī-lôrəs)
n. pl. py•lo•ri (-lôrī′)
  1. The passage at the lower end of the stomach that opens into the duodenum.
  2. 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.

pylorus in Science

pylorus

[pī-lôrəs, pĭ-]
Plural pylori (pī-lôrī′, pĭ-)
  1. 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.