| Plesiosaurus | ‖n.; |
| プレシオザウルス | [pureshiozaurusu] (n) Plesiosaurus [Add to Longdo] |
| genus plesiosaurus | (n) a reptile genus of suborder Plesiosauria |
| plesiosaur | (n) extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous, Syn. plesiosaurus |