ˌpakə̇sə̇ˈfālāə noun
or pachy·ceph·a·ly ˌpakə̇ˈsefəlē
( plural pachycephalias or pachycephalies )
Etymology: pachycephalia from New Latin, from pachy- + cephal- + -ia; pachycephaly International Scientific Vocabulary pachy- + cephal- + -y
: thickness of skull or head