plural noun
Athe·​cae | \ əˈthē(ˌ)sē\

Definition of Athecae

: a division usually made a suborder of Testudinata comprising turtles with the carapace separate from the internal skeleton and usually with greatly reduced ossification and represented among recent forms by the marine leatherback

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!

Other Words from Athecae

athecan \ -​ēkən \ adjective or noun

History and Etymology for Athecae

New Latin, from feminine plural of (assumed) New Latin athecus having no cover, from New Latin a- entry 2 + (assumed) New Latin -thecus (from Latin theca cover, sheath)

Keep scrolling for more

Comments on Athecae

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


characterized by aphorism

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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