pyknodysostosis

[pĭk′nō-dĭs′ŏs-tōsĭs]
n.
  1. An inherited disorder characterized by short stature, delayed closure of the fontanelles, and hypoplasia of the terminal phalanges.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.