Definition of plesiosaur in English:

plesiosaur

noun ˈpliːzɪəsɔːˈpliːsɪəsɔːˈplisiəˌsɔr

A large fossil marine reptile of the Mesozoic era, with a broad flat body, large paddle-like limbs, and typically a long flexible neck and small head.
Infraorder Plesiosauria, superorder Sauropterygia: several families, including Plesiosauridae (see also elasmosaur, pliosaur)
Example sentencesExamples
- The plesiosaur and sauropod dinosaurs had 30 to 50 neck bones!
- These are sauropterygians, marine reptiles related to plesiosaurs, from the middle Triassic.
- While dinosaurs ruled the land, the ichthyosaurs, classified variously in the Ichthyosauria or in the Ichthyopterygia, shared the seas of the world with the other great groups of large marine reptiles, the plesiosaurs and mosasaurs.
- Marine vertebrates included the large dolphin-like ichthyosaurs and the long-necked plesiosaurs, marine crocodiles, turtles, and other reptiles.
- More distantly related to true dinosaurs were the marine plesiosaurs and ichthyosaurs.

Origin

Mid 19th century: from modern Latin Plesiosaurus, from Greek plēsios 'near' + sauros 'lizard'.

Definition of plesiosaur in US English:

plesiosaur

nounˈplisiəˌsɔrˈplēsēəˌsôr

A large extinct marine reptile of the Mesozoic era, with a broad flat body, large paddle-like limbs, and typically a long flexible neck and small head.
Infraorder Plesiosauria, superorder Sauropterygia: several families, including Plesiosauridae
Example sentencesExamples
- The plesiosaur and sauropod dinosaurs had 30 to 50 neck bones!
- While dinosaurs ruled the land, the ichthyosaurs, classified variously in the Ichthyosauria or in the Ichthyopterygia, shared the seas of the world with the other great groups of large marine reptiles, the plesiosaurs and mosasaurs.
- Marine vertebrates included the large dolphin-like ichthyosaurs and the long-necked plesiosaurs, marine crocodiles, turtles, and other reptiles.
- More distantly related to true dinosaurs were the marine plesiosaurs and ichthyosaurs.
- These are sauropterygians, marine reptiles related to plesiosaurs, from the middle Triassic.

Origin

Mid 19th century: from modern Latin Plesiosaurus, from Greek plēsios ‘near’ + sauros ‘lizard’.

单词	plesiosaur
释义	Definition of plesiosaur in English: plesiosaur noun ˈpliːzɪəsɔːˈpliːsɪəsɔːˈplisiəˌsɔr A large fossil marine reptile of the Mesozoic era, with a broad flat body, large paddle-like limbs, and typically a long flexible neck and small head. Infraorder Plesiosauria, superorder Sauropterygia: several families, including Plesiosauridae (see also elasmosaur, pliosaur) Example sentencesExamples The plesiosaur and sauropod dinosaurs had 30 to 50 neck bones! These are sauropterygians, marine reptiles related to plesiosaurs, from the middle Triassic. While dinosaurs ruled the land, the ichthyosaurs, classified variously in the Ichthyosauria or in the Ichthyopterygia, shared the seas of the world with the other great groups of large marine reptiles, the plesiosaurs and mosasaurs. Marine vertebrates included the large dolphin-like ichthyosaurs and the long-necked plesiosaurs, marine crocodiles, turtles, and other reptiles. More distantly related to true dinosaurs were the marine plesiosaurs and ichthyosaurs. Origin Mid 19th century: from modern Latin Plesiosaurus, from Greek plēsios 'near' + sauros 'lizard'. Definition of plesiosaur in US English: plesiosaur nounˈplisiəˌsɔrˈplēsēəˌsôr A large extinct marine reptile of the Mesozoic era, with a broad flat body, large paddle-like limbs, and typically a long flexible neck and small head. Infraorder Plesiosauria, superorder Sauropterygia: several families, including Plesiosauridae Example sentencesExamples The plesiosaur and sauropod dinosaurs had 30 to 50 neck bones! While dinosaurs ruled the land, the ichthyosaurs, classified variously in the Ichthyosauria or in the Ichthyopterygia, shared the seas of the world with the other great groups of large marine reptiles, the plesiosaurs and mosasaurs. Marine vertebrates included the large dolphin-like ichthyosaurs and the long-necked plesiosaurs, marine crocodiles, turtles, and other reptiles. More distantly related to true dinosaurs were the marine plesiosaurs and ichthyosaurs. These are sauropterygians, marine reptiles related to plesiosaurs, from the middle Triassic. Origin Mid 19th century: from modern Latin Plesiosaurus, from Greek plēsios ‘near’ + sauros ‘lizard’.
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