root canal

root canal Word Origin noun Dentistry.

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

Origin of root canal First recorded in 1890–95 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

root canal in Medicine root canal n.

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