Dentin
ahd-5
noun.
The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.
The Century Dictionary and Cyclopedia
noun.
The proper substance or tissue of teeth, as ivory, for instance, as distinguised from enamel, cement, or pulp.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
The hard, dense
calcareous
material that makes up the bulk of a
tooth
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
bone (calcified tissue) surrounding the pulp cavity of a tooth
noun.
a calcareous material harder and denser than bone that comprises the bulk of a tooth