• (n.) A large American Miocene mammal, allied to the rhinoceros, and more nearly to the extinct Brontotherium.
Ti`tan·o·the'ri·um noun [ New Latin , from Greek ... a Titan + ..., dim. of ... a beast.] (Paleon.) A large American Miocene mammal, allied to the rhinoceros, and more nearly to the extinct Brontotherium.