[ter-uh-sawr] 
| any flying reptile of the extinct order Pterosauria, from the Jurassic and Cretaceous periods, having the outside digit of the forelimb greatly elongated and supporting a wing membrane. |
| pter·o·saur (těr'ə-sôr') n. Any of various extinct flying reptiles of the order Pterosauria, including the pterodactyls, of the Jurassic and Cretaceous periods, characterized by wings consisting of a flap of skin supported by the very long fourth digit on each forelimb. [From New Latin Pterosauria, order name : Greek pteron, feather, wing; see -pter + Greek sauros, lizard.] |
əˌsɔr