plural noun Ceph·a·las·pi·da \-pədə\

Definition of Cephalaspida

  1. :  a class or lesser division of primitive extinct vertebrates including Cephalaspis and a few related genera of Devonian ostracoderms

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 cephalaspida

New Latin, from Cephalaspis + -ida

Seen and Heard

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


a trip made at another's expense

Get Word of the Day daily email!