| titanosaur | (n) amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the southern hemisphere, Syn. titanosaurian |
| titanosauridae | (n) herbivorous dinosaurs of the Cretaceous, Syn. family Titanosauridae |
| titanosaurus | (n) genus of herbivorous dinosaurs flourishing during the Cretaceous in South America, Syn. genus Titanosaurus |
| Titano- | (Chem.) A combining form (also used adjectively) designating certain double compounds of titanium with some other elements; |
| Titanotherium | ‖n. [ NL., fr. Gr. &unr_; a Titan + &unr_;, dim. of &unr_; a beast. ] (Paleon.) A large American Miocene mammal, allied to the rhinoceros, and more nearly to the extinct Brontotherium. [ 1913 Webster ] |
| Titanous | a. Designating certain compounds of titanium in which that element has a lower valence as contrasted with |