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

Word History

Etymology

New Latin, from plesi- + -saurus

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Dictionary Entries Near plesiosaurus

Cite this Entry

“Plesiosaurus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plesiosaurus. Accessed 28 Nov. 2022.

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