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[per-i-tn-ahy-tis] /ˌpɛr ɪ tnˈaɪ tɪs/
noun, Pathology
inflammation of the peritoneum, often accompanied by pain and tenderness in the abdomen, vomiting, constipation, and moderate fever.
Origin of peritonitis
1770-80; periton(eum) + -itis
Related forms
[per-i-tn-it-ik] /ˌpɛr ɪ tnˈɪt ɪk/ (Show IPA),
peritonital, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for peritonitis
  • Cirrhotic patients with ascites are at risk of spontaneous bacterial peritonitis.
British Dictionary definitions for peritonitis


inflammation of the peritoneum
Derived Forms
peritonitic (ˌpɛrɪtəˈnɪtɪk) adjective
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
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Word Origin and History for peritonitis

1776, medical Latin, coined c.1750 by French pathologist François-Boissier de la Croix de Sauvages (1706-1767) from Greek peritonos (from peritonaion; see peritoneum) + -itis.

Online Etymology Dictionary, © 2010 Douglas Harper
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peritonitis in Medicine

peritonitis per·i·to·ni·tis (pěr'ĭ-tn-ī'tĭs)
Inflammation of the peritoneum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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peritonitis in Science
Infection or inflammation of the peritoneal cavity, usually caused by a ruptured organ, such as the appendix, in the gastrointestinal tract.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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