The Collaborative International Dictionary of English v.0.48:

Hybodont \Hyb"o*dont\, a. [Gr. ? hump + ?, ?, a tooth.]
   (Paleon.)
   Of, pertaining to, or resembling, an extinct genus of sharks
   (Hybodus), especially in the form of the teeth, which
   consist of a principal median cone with smaller lateral ones.
   [1913 Webster]