Definitions

from The Century Dictionary.

  • Regular sea-urchins, with biserial ambulacral plates, centric mouth, and aboral anus interior. Also called Endocyclica.

from the GNU version of the Collaborative International Dictionary of English.

  • noun plural (Zoöl.) A division of Echini which includes the circular, or regular, sea urchins.

Etymologies

Sorry, no etymologies found.

Examples

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.