̷ ̷ˌ ̷ ̷ ̷ ̷ˈsefəˌlizəm noun
or me·sati·ceph·a·ly -fəlē
Etymology: mesaticephalism from mesati- (from Greek mesatos midmost, irregular superl. of mesos mid, in the middle) + -cephalism; mesaticephaly, International Scientific Vocabulary mesati- + -cephaly
: the quality or state of being mesaticephalic