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Meaning of dentin

den•tin

Pronunciation: (den'tn, -tin), [key]
— n. Dentistry.
  1. the hard, calcareous tissue, similar to but denser than bone, that forms the major portion of a tooth, surrounds the pulp cavity, and is situated beneath the enamel and cementum. See diag. under
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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