• WordNet 3.6
    • n cementum a specialized bony substance covering the root of a tooth
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Century Dictionary and Cyclopedia
    • n cementum In anatomy, same as cement, 4.
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In literature:

Teeth-enamel is formed from the epiblast, and dentine, cementum, pulp (except as to nerve tissue) from the mesoblast.
"Degeneracy" by Eugene S. Talbot
Aging white-tailed deer by annuli in the cementum of the first incisor.
"Ecological Studies of the Timber Wolf in Northeastern Minnesota" by L. David Mech