brachycephalic (vs. dolichocephalic), brachycranal, brachycranic

from The Collaborative International Dictionary of English v.0.48

broad-headed \broad-headed\ adj.
   having a broad head. [Narrower terms: {brachycephalic (vs.
   dolichocephalic), brachycranal, brachycranic}]

   Syn: roundheaded, short-headed.
        [WordNet 1.5]