megalocephalic

from The Collaborative International Dictionary of English v.0.48
Megalocephalia \Meg`a*lo*ce*pha"li*a\, Megalocephaly
\Meg`a*lo*ceph"a*ly\, n. [NL. megalocephalia, fr. Gr. ? having a
   large head.] (Med.)
   The condition of having an abnormally large head; called also
   {megacephaly}. -- {Meg`a*lo*ce*phal"ic}, a.
   [Webster 1913 Suppl.]
    

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