A malformation characterized by a triangular configuration of the skull, due in part to premature synostosis of the cranial bones with accompanying compression of the cerebral hemispheres.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for trigonocephaly
Historical Examples of trigonocephaly
Trigonocephaly (triangular head) is a variety of scaphocephaly in which depression occurs in place of the keel.Degeneracy
Eugene S. Talbot