The Collaborative International Dictionary
Titanotherium
Titanotherium \Ti`tan*o*the"ri*um\, n. [NL., fr. Gr. ? a Titan + ?, dim. of ? a beast.] (Paleon.) A large American Miocene mammal, allied to the rhinoceros, and more nearly to the extinct Brontotherium.
Wiktionary
titanotherium
n. (context paleontology English) A large American Miocene mammal, allied to the rhinoceros and (more closely) to the extinct Brontotherium.