prosencephalon

prosencephalon /pros·en·ceph·a·lon/ (pros?en-sef´ah-lon) forebrain.

1. the part of the brain developed from the anterior of the three primary brain vesicles, comprising the diencephalon and telencephalon.

2. the most anterior of the primary brain vesicles, later dividing into the telencephalon and diencephalon.

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pros·en·ceph·a·lon (prsn-sf-ln)

n.

1. The most anterior of the three primary regions of the embryonic brain, from which the telencephalon and diencephalon develop.

2. The segment of the adult brain that develops from the embryonic forebrain and includes the cerebrum, thalamus, and hypothalamus.

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prosen·ce·phalic (-s-flk) adj.

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prosencephalon

the forebrain consisting of the diencephalon (thalamus, epithalamus, subthalamus, hypothalamus) and the telencephalon (cerebral hemispheres).