plural noun
Xe·​nar·​thra | \ zəˈnärthrə \

Definition of Xenarthra

: a suborder or other division of Edentata comprising the American anteaters, armadillos, sloths, and usually the extinct ground sloths

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 Xenarthra

xenarthral \ -​thrəl \ or xenarthrous \ -​thrəs \ adjective
xenarthran \ -​thrən \ adjective or noun

History and Etymology for Xenarthra

New Latin, from xen- + arthra, plural of arthron

Keep scrolling for more

Learn More about Xenarthra

Statistics for Xenarthra

Cite this Entry

“Xenarthra.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Xenarthra. Accessed 24 Feb. 2020.

Comments on Xenarthra

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?


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!