from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Below the fornix
from The Century Dictionary and Cyclopedia
- Situated beneath the fornix of the brain.
sub- + fornical (Wiktionary)
The receptors in the brainstem (area postrema and subfornical organ) are believed to be involved in inducing satiety, regardless of the presence of food in the gastric system.