Synaptosauria

plural noun Syn·ap·to·sau·ria \ sə̇ˌnaptəˈsȯrēə \

Definition of Synaptosauria

:a subclass of Reptilia comprising Permian and Mesozoic typically aquatic or amphibious reptiles with temporal openings high on the roof of the skull and including the orders Protorosauria and Sauropterygia

synaptosaurian

adjective

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!
Already a subscriber? Log in.

Origin and Etymology of synaptosauria

New Latin, from Greek synaptos + New Latin -sauria


Seen and Heard

What made you want to look up Synaptosauria? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

readily predictable

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!