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basal ridge

American  

noun

Dentistry.
  1. a U -shaped ridge at the base of the posterior surface of the crown of a tooth.


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Professor Owen relates that an eminent engineer, to whom he showed a hyæna's jaw, remarked that the strong conical tooth, with its basal ridge, was a perfect model of a hammer for breaking stones.

From Natural History of the Mammalia of India and Ceylon by Sterndale, Robert Armitage

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