Mesocephalic \Mes`o*ce*phal"ic\, a. [Meso- + cephalic.] (Anat.)
(a) Of or pertaining to, or in the region of, the middle of
the head; as, the mesocephalic flexure.
(b) Having the cranial cavity of medium capacity; neither
megacephalic nor microcephalic.
(c) Having the ratio of the length to the breadth of the
cranium a medium one; mesaticephalic.
[1913 Webster]