hyperostosis frontalis interna

[frŭn-tālĭs ĭn-tûrnə]
n.
  1. The abnormal deposition of bone on the frontal bone of the skull; it most commonly affects women and is seen in Morgagni's syndrome.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.