achondrogenesis

[ ā-kŏn′drō-jĕnĭ-sĭs, ə-kŏn′- ]

n.

Dwarfism characterized by various bone aplasias and hypoplasias of the extremities and a short trunk with delayed ossification of the lower spine.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.