the condition of having an unusually large head or cranial capacity. It can be of congenital origin or result from an abnormal overgrowth of the facial bones
Compare microcephaly
Collins Concise English Dictionary © HarperCollins Publishers::
meg•a•ce•phal•ic
(meg′ə sə fal′ik),USA pronunciation adj. [Cephalom.]
meg′a•ceph′a•ly, n.
- Anatomymacrocephalic.
- mega- + cephalic 1875–80
'megacephaly' also found in these entries (note: many are not synonyms or translations):