雙齒動物
Diphyodont \Diph"y*o*dont\, a. [Gr. ? double (di- = di`s- twice + ? to produce) + ?, ?, tooth.] (Anat.) Having two successive sets of teeth (deciduous and permanent), one succeeding the other; as, a diphyodont mammal; diphyodont dentition; -- opposed to {monophyodont}. -- n. An animal having two successive sets of teeth.