telencephalon

noun, plural tel·en·ceph·a·lons, tel·en·ceph·a·la [tel-en-sef–uh-luh] /ˌtɛl ɛnˈsɛf ə lə/. Anatomy.

1. the anterior section of the forebrain comprising the cerebrum and related structures.

noun

1. the cerebrum together with related parts of the hypothalamus and the third ventricle

n.

1. The anterior portion of the prosencephalon, constituting the cerebral hemispheres and composing with the diencephalon the prosencephalon.endbrain