diencephalon

/ˌdaɪənˈsɛfəˌlɑn/
noun
  1. A part of the brain located between the cerebrum and the brainstem, containing the thalamus and hypothalamus, and involved in sensory and autonomic functions.
    • The anatomy class studied the structure of the diencephalon in detail.
    • Injuries to the diencephalon can disrupt sleep and appetite.
    • The diencephalon plays a key role in relaying sensory information.