any extinct flying reptile of the order Pterosauria, of Jurassic and Cretaceous times: included the pterodactyls
Compare dinosaur, plesiosaur
pterosaur in American English
(ˈtɛrəˌsɔr)
noun
any of an order (Pterosauria) of flying reptiles of the Mesozoic Era, having wings of skin stretched along the body between the hind limbs and the very long fourth digits of each forelimb