from the GNU version of the Collaborative International Dictionary of English
- n.pl. A comprehensive division of the Vertebrata, including all those that have a skull.
from The Century Dictionary and Cyclopedia
- A primary division of the Vertebrata, including those which possess a skull and brain, or the whole of the Vertebrata excepting the Leptocardia or Acrania. Also Craniata.
Sorry, no etymologies found.