Source : Webster's Revised Unabridged Dictionary (1913)

Brachycephalic \Brach`y*ce*phal"ic\, Brachycephalous
\Brach`y*ceph"a*lous\, a. [Gr. brachy`s short + ? head.] (Anat.)
   Having the skull short in proportion to its breadth;
   shortheaded; -- in distinction from dolichocephalic.