plesiosaurus
noun
ple·si·o·sau·rus
ˌplēsēəˈsȯrəs
1
capitalized
: a genus of marine reptiles (suborder Plesiosauria) of the Mesozoic of Europe and North America having a very long neck, a small head, and all four limbs developed as paddles for swimming
2
plural plesiosauri
-ȯˌrī
: any reptile of the genus Plesiosaurus
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Cite this Entry
“Plesiosaurus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plesiosaurus. Accessed 30 Nov. 2024.
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