from The Century Dictionary.

  • Having thick or massive teeth, as a mammal or a mollusk.


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  • "A. adj. Having thick or massive teeth; spec. of, relating to, or designating (the dentition of) a bivalve mollusc characterized by one to three heavy, blunt teeth in the hinge of the shell, as typical of the extinct rudists (sometimes classified in an order Pachyodonta). Cf. PACHYDONT adj.

    B. n. A pachyodont bivalve mollusc. rare." (OED)

    September 9, 2008