from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. In trilobites, the part of the cephalon (the head) consisting of the glabella and the fixigenae.
from The Century Dictionary and Cyclopedia
- n. In the cephalon of the trilobites, the central piece included within the facial sutures, consisting of the glabella and fixed cheeks.
Sorry, no etymologies found.