di·en·ceph·a·lon (d   n-sf  -l n, -ln)n. The posterior part of the forebrain that connects the midbrain with the cerebral hemispheres, encloses the third ventricle, and contains the thalamus and hypothalamus. Also called betweenbrain, interbrain, thalamencephalon. [di(a)- + encephalon.] di·en·ce·phal ic (-s-f l k) adj. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | diencephalon - the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon corpus mamillare, mamillary body, mammillary body - one of two small round structures on the undersurface of the brain that form the terminals of the anterior arches of the fornix infundibulum - any of various funnel-shaped parts of the body (but especially the hypophyseal stalk) pineal eye, third eye - a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles neural structure - a structure that is part of the nervous system nervus opticus, optic nerve, optic tract, second cranial nerve - the cranial nerve that serves the retina hypophysis, pituitary, pituitary body, pituitary gland - the master gland of the endocrine system; located at the base of the brain forebrain, prosencephalon - the anterior portion of the brain; the part of the brain that develops from the anterior part of the neural tube basal ganglion - any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement thalamus - large egg-shaped structures of grey matter that form the dorsal subdivision of the diencephalon hypothalamus - a basal part of the diencephalon governing autonomic nervous system |
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