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root canal

noun, Dentistry.
1.
Also called pulp canal. the root portion of the pulp cavity.
2.
Informal. root canal therapy (def 2).
Origin
1890-1895
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for root canal

root canal

noun
1.
the passage in the root of a tooth through which its nerves and blood vessels enter the pulp cavity
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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root canal in Medicine

root canal n.

  1. The chamber of the dental pulp lying within the root portion of a tooth. Also called pulp canal.

  2. A treatment in which diseased tissue from this part of the tooth is removed and the resulting cavity is filled with an inert material.

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