plesiosaur

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Related to plesiosauri: Pliosaur, Sauropterygia

ple·si·o·saur

 (plē′sē-ə-sôr′, plē′zē-)
n. pl. ple·si·o·saurs
Any of various extinct marine reptiles of the group Plesiosauria of the Mesozoic Era, having paddlelike limbs, a short tail, and sometimes a very long neck.

[New Latin Plēsiosaurus, type genus : Greek plēsios, near to; see pel- in Indo-European roots + Greek sauros, lizard.]

plesiosaur

(ˈpliːsɪəˌsɔː)
n
(Palaeontology) any of various extinct marine reptiles of the order Sauropterygia, esp any of the suborder Plesiosauria, of Jurassic and Cretaceous times, having a long neck, short tail, and paddle-like limbs. See also ichthyosaur Compare dinosaur, pterosaur
[C19: from New Latin plēsiosaurus, from Greek plēsios near + sauros a lizard]

ple•si•o•saur

(ˈpli si əˌsɔr)

n.
any extinct marine reptile of the Jurassic and Cretaceous suborder Plesiosauroidea, having a thick body and paddlelike limbs.
[< New Latin Plesiosaurus (1821) genus name < Greek plēsí(os) near, close to + -o- -o- + saûros -saur]
ple`si•o•sau′roid, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.plesiosaur - extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbsplesiosaur - extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous
archosaur, archosaurian, archosaurian reptile - extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts
genus Plesiosaurus - a reptile genus of suborder Plesiosauria