plural noun Echin·i·dae \-ˈkinəˌdē\

Definition of Echinidae

  1. :  a family (order Centrechinoida) including a large number of widely distributed sea urchins a few of which are used as food — see echinus

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 echinidae

New Latin, from Echinus, type genus + -idae

Seen and Heard

What made you want to look up Echinidae? 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!