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or pyorrhoea

[pahy-uh-ree-uh] /ˌpaɪ əˈri ə/
Pathology. a discharge of pus.
Also called pyorrhea alveolaris
[al-vee-uh-lar-is] /ælˌvi əˈlær ɪs/ (Show IPA),
Riggs' disease. Dentistry. a chronic form of periodontitis occurring in various degrees of severity, characterized in its severe forms by the formation of pus in the pockets between the roots of the teeth and their surrounding tissues, and frequently accompanied by the loosening and subsequent loss of the teeth.
Origin of pyorrhea
From New Latin, dating back to 1805-15; See origin at pyo-, -rhea
Related forms
pyorrheal, pyorrheic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for pyorrhoea


inflammation of the gums characterized by the discharge of pus and loosening of the teeth; periodontal disease
Derived Forms
pyorrhoeal, pyorrhoeic, especially (US) pyorrheal, pyorrheic, 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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pyorrhoea in Medicine

pyorrhea py·or·rhe·a (pī'ə-rē'ə)

  1. Purulent inflammation of the gums and tooth sockets, often leading to loosening of the teeth.

  2. A discharge of pus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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