'Thalamencephalon' definitions:

Definition of 'Thalamencephalon'

From: GCIDE

Thalamencephalon \Thal`a*men*ceph"a*lon\, n. [NL. See Thalamus, and Encephalon.] (Anat.) The segment of the brain next in front of the midbrain, including the thalami, pineal gland, and pituitary body; the diencephalon; the interbrain. [1913 Webster]