Webster's Revised Unabridged Dictionary · 1913

Mesocephalic

Mesocephalic , adjective

[Meso- + cephalic.]

(a)
(Anatomy) Of or pertaining to, or in the region of, the middle of the head; as, the mesocephalic flexure.
(b)
(Anatomy) Having the cranial cavity of medium capacity; neither megacephalic nor microcephalic.
(c)
(Anatomy) Having the ratio of the length to the breadth of the cranium a medium one; mesaticephalic.