from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See diencephalon.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The segment of the brain next in front of the midbrain, including the thalami, pineal gland, and pituitary body.
from the GNU version of the Collaborative International Dictionary of English
- n. The segment of the brain next in front of the midbrain, including the thalami, pineal gland, and pituitary body; the diencephalon; the interbrain.
from The Century Dictionary and Cyclopedia
- n. The parts of the brain about the third ventricle developed from the hinder part of the first primary cerebral vesicle, including the thalami, the optic tracts and chiasma, the infundibulum and cerebral part of the pituitary body, the corpora albicantia, the conarium, the ependymal part of the velum interpositum, a lamina cinerea, and other structures. Also called diencephalon, interbrain, 'tween-brain. See cuts under Elasmobranchii, encephalon, Rana, Petromyzontidæ, and cerebral.
thalam(us) + encephalon.(American Heritage® Dictionary of the English Language, Fourth Edition)
From thalamus and encephalon. (Wiktionary)