plural noun Arc·ti·i·dae \ärkˈtīəˌdē\

Definition of Arctiidae

  1. :  a large and variously delimited family of moths typically having stout bodies and broad wings often conspicuously striped or spotted, the larvae being usually hairy caterpillars — see tiger moth, woolly bear

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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of arctiidae

New Latin, from Arctia, type genus (from Greek arktos bear + New Latin -ia) + -idae; from the furry appearance — more at arctic

Seen and Heard

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


capable of being understood in two ways

Get Word of the Day daily email!