noun.
The posterior part of the forebrain that connects the midbrain with the cerebral hemispheres, encloses the third ventricle, and contains the thalamus and hypothalamus.
The Century Dictionary and Cyclopedia
noun.
In anatomy, the inter-brain or middle brain, otherwise known as the deutencephalon and thalamencephalon.
the GNU version of the Collaborative International Dictionary of English
noun.
The interbrain or thalamencephalon; -- sometimes abbreviated to dien. See thalamencephalon.
noun.
The region of the human brain, specifically the human forebrain, that includes the thalamus, the hypothalamus, the epithalamus, the prethalamus or subthalamus, and the pretectum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon