pachycephalia
noun
pachy·ce·pha·lia
| \ ˌpak-ē-sə-ˈfā-lē-ə
\
\
variants:
or pachycephaly \ ˌpak-i-ˈsef-ə-lē
\
\
plural pachycephalias
or pachycephalies
Medical Definition of pachycephalia
: thickness of the skull or head