brachycephalicPronunciation: /ˌbrakɪsɪˈfalɪk, -kɛˈfalɪk/Definition of brachycephalic adjective Anatomy having a relatively broad, short skull (typically with the breadth at least 80 per cent of the length). Often contrasted with dolichocephalic.Derivatives brachycephaly noun brachycephalic in other Oxford dictionaries Definition of brachycephalic in the US English dictionary