dol·i·cho·ce·phal·ic 
(dŏl′ĭ-kō-sə-fălĭk) also dol·i·cho·ceph·a·lous (-sĕfə-ləs)
(dŏl′ĭ-kō-sə-fălĭk) also dol·i·cho·ceph·a·lous (-sĕfə-ləs)adj.
Having a relatively long head with a cephalic index below 76.
[Greek dolikhos, long; see del-1 in the Appendix of Indo-European roots + -CEPHALIC.]
dol′i·cho·cepha·lism (-sĕfə-lĭz′əm), dol′i·cho·cepha·ly (-sĕfə-lē) n.