from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A diffuse network of cells that conducts impulses in all directions from the area stimulated, forming a primitive nervous system in ctenophores, coelenterates, and certain other organisms.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Simplistic and uncentralized nervous system of cnidarians.
Sorry, no etymologies found.