platy·cephalic \| ̷ ̷ ̷ ̷+\adjective alsoplaty·cephalous\| ̷ ̷ ̷ ̷+\ Etymology:platycephalic from platy- + -cephalic; platycephalous International Scientific Vocabulary platy- + -cephalous : having a head flat on top < the chimpanzee is more platycephalic than … the gorilla — Arthur Keith >