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| ple·si·o·saur [ plssee ə sàwr, plzee ə sàwr ] (plural ple·si·o·saurs) |
noun |
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| Definition: |
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extinct ocean reptile: an extinct ocean reptile of the Mesozoic era with limbs like paddles, a large flattened body, and a short tail. Suborder Sauropterygia.
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| [Mid-19th century. < modern Latin Plesiosaurus< Greek plēsios "near" + sauros "lizard"] |
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