-
Trending Now:
More Trending:
- admiral's mast calumny kakistocracy bona fide surrogate mother
- ALL
Plesiosauria
plural noun
Ple·si·o·sau·ria
Definition of Plesiosauria
1 : a suborder of Sauropterygia comprising Mesozoic marine reptiles with dorsoventrally flattened bodies and limbs modified into paddles — compare plesiosaurus
2 in some classifications : an order of Reptilia nearly coextensive with Sauropterygia
plesiosaurian
adjective or nounplesiosauroid
\-ȯˌrȯid\ adjectiveExplore Merriam-Webster
There's more!
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of plesiosauria
New Latin, from plesi- + -sauria
Seen and Heard
What made you want to look up Plesiosauria? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!