dentin

Noun
  1. A calcareous material harder and denser than bone that comprises the bulk of a tooth (synset 114781561)
    is a type of: animal material - material derived from animals
    subtypes: ivory, tusk - a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses
    same as: dentine
  2. Bone (calcified tissue) surrounding the pulp cavity of a tooth (synset 105281945)
    is a type of: bone, os - rigid connective tissue that makes up the skeleton of vertebrates
    is a part of: tooth - hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense
    same as: dentine

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