dolichocephalic
Concise Oxford English Dictionary © 2008 Oxford University Press:
dolichocephalic /ˌdɒlɪkə(ʊ)sɪˈfalɪk, -kɛˈfalɪk-/
▶adjective Anatomy having a relatively long skull. Often contrasted with brachycephalic.
– derivatives
dolichocephaly noun.
dolichocephaly noun.
'dolichocephalic' also found in these Oxford entries:

