root canals

root canal

noun Dentistry.
1.
Also called pulp canal. the root portion of the pulp cavity.
2.
Informal. root canal therapy ( def 2 ).

Origin:
1890–95

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World English Dictionary
root canal
 
n
the passage in the root of a tooth through which its nerves and blood vessels enter the pulp cavity

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

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
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