Archelon

noun

Ar·​che·​lon
ˈärkəˌlän
: a genus of very large extinct marine turtles from the Cretaceous of South Dakota having a well-developed plastron but poorly developed carapace

Word History

Etymology

New Latin, probably irregular from archi- + Greek chelōnē tortoise; akin to Greek chelys tortoise

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!

Dictionary Entries Near Archelon

Cite this Entry

“Archelon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Archelon. Accessed 24 Jun. 2024.

Love words? Need even more definitions?

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