thalamus

thal·a·mus

noun \ˈthal-ə-məs\

plural thal·a·mi \-ˌmī, -ˌmē\

Definition of THALAMUS

: the largest subdivision of the diencephalon that consists chiefly of an ovoid mass of nuclei in each lateral wall of the third ventricle and serves to relay impulses and especially sensory impulses to and from the cerebral cortex

Illustration of THALAMUS