plural noun
Ceph·​a·​las·​pi·​da | \ -pədə \

Definition of Cephalaspida

: 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.

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 Cephalaspida

New Latin, from Cephalaspis + -ida

Keep scrolling for more

Learn More about Cephalaspida

Statistics for Cephalaspida

Cite this Entry

“Cephalaspida.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cephalaspida. Accessed 23 Sep. 2020.

Comments on Cephalaspida

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


Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

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!