plural noun
Er·​e·​thi·​zon·​ti·​dae | \ ˌerəthə̇ˈzäntəˌdē \

Definition of Erethizontidae

: a family of chiefly arboreal hystricomorph rodents comprising the typical New World porcupines with the tail more or less prehensile and the soles of the feet specialized for climbing

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!

History and Etymology for Erethizontidae

New Latin, from Erethizont-, Erethizon, type genus + -idae

Keep scrolling for more

Learn More about Erethizontidae

Statistics for Erethizontidae

Cite this Entry

“Erethizontidae.” Dictionary, Merriam-Webster, Accessed 3 Jul. 2020.

Comments on Erethizontidae

What made you want to look up Erethizontidae? 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

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
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!