clinocephaly

Century Dictionary and Cyclopedia

1. n. In craniology, a pathological deformation of the cranium resulting from a premature synostosis of the parietal bones with the alisphenoids and with the temporal bones, and characterized by a depression of the anterior portion of the parietal bones, behind the coronal suture.

WordNet 3.0

1. n. a congenital defect in which the top of the head is depressed (concave instead of convex)