scaphocephaly

scaphocephaly /skaf′ōsef″əlē/ [Gk, skaphe, skiff, kephale, head] , a congenital malformation of the skull in which premature closure of the sagittal suture results in restricted lateral growth of the head, giving it an abnormally long, narrow appearance with a cephalic index of 75 or less. Also called dolichocephaly, mecocephaly, scaphocephalis, scaphocephalism. See also craniostenosis.