Definition of plesiosaur
: any of an order or suborder (Plesiosauria) of large carnivorous marine reptiles of the Mesozoic with dorsoventrally flattened bodies and limbs modified into flippers
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Recent Examples of plesiosaur from the Web
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The plesiosaurs - a group of marine reptiles including the pliosaurs - were thought to feed primarily on large marine animals and fish.
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Pliosaurs are a kind of plesiosaur, characterised by a large, two-metre-long skull, enormous teeth and extremely powerful jaws, making them the top ocean predators during the dinosaur age.
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Origin and Etymology of plesiosaur
ultimately from Greek plēsios close (akin to Greek pelas near) + sauros lizard
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See words that rhyme with plesiosaur Britannica.com: Encyclopedia article about plesiosaur
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