Of, relating to, or connected with the mesencephalon (midbrain).

Of or relating to the prosencephalon.

Zoology. = mesencephalic, adj. Now rare.

Designating or relating to the regions of the brain concerned with the sense of smell; spec. designating a sulcus that separates the olfactory…

of or relating to the procerebrum; situated anterior to the cerebral ganglion.

derived from the telencephalon; of or relating to the telencephalon.

Of, relating to, or designating a region of the brain situated anterior to the tectum, containing fibres involved in oculomotor responses.