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pylorus

American  
[pahy-lawr-uhs, -lohr-, pi-] / paɪˈlɔr əs, -ˈloʊr-, pɪ- /

noun

Anatomy.
pylori plural
  1. the opening between the stomach and the duodenum.


pylorus British  
/ paɪˈlɔːrəs /

noun

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

"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

pylorus Scientific  
/ pī-lôrəs,pĭ- /
pylori plural
  1. The passage at the lower end of the stomach that opens into the small intestine.


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of pylorus

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The glands of the cardia and pylorus are composed primarily of mucus-secreting cells.

From Textbooks Jun. 19, 2013

Both processes take time, so the pumping action of the pylorus must be carefully controlled to prevent the duodenum from being overwhelmed with chyme.

From Textbooks Jun. 19, 2013

The funnel-shaped pylorus connects the stomach to the duodenum.

From Textbooks Jun. 19, 2013

The initial mixing waves are relatively gentle, but these are followed by more intense waves, starting at the body of the stomach and increasing in force as they reach the pylorus.

From Textbooks Jun. 19, 2013

Stricture of the pylorus and consequent dilatation of the stomach may be caused by the cicatrization of an ulcer.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

Lung cancer was linked to smoking and air pollution, while stomach cancer was largely linked to a bacteria called Helicobacter pylori.

From Barron's Feb. 3, 2026

The agency's report also looked at nine cancer-causing infections including HPV, hepatitis viruses which lead to liver cancer and the stomach bug H. pylori.

From BBC Feb. 3, 2026

The calculations show an increase in the relative risk compared to people who did not experience a symptomatic H. pylori infection after the age of 50.

From Science Daily Dec. 13, 2023

Cancer-inducing microbes such as Enterococcus faecalis, Helicobacter pylori and Papillomavirus are associated with increased tumor burden and cancer progression.

From Salon Feb. 28, 2023

Q: You have written about bad breath that might be caused by an infection with H. pylori.

From Seattle Times Apr. 27, 2022

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