pachyperiostitis

[ păk′ĭ-pĕr′ē-ŏ-stōsĭs ]

n.

Proliferative thickening of the periosteum caused by inflammation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.