lab·y·rin·tho·dont 
(lăb′ə-rĭnthə-dŏnt′)
(lăb′ə-rĭnthə-dŏnt′)adj.
1. Having teeth with a labyrinthine internal structure.
2. Of or relating to an extinct group of amphibians having a labyrinthine tooth structure, often classified in the subclass (or superorder) Labyrinthodontia.
lab′y·rintho·dont′ n.