enostosis

[ ĕn′ŏ-stōsĭs ]

n. pl. en•os•to•ses (-sēz)

A mass of proliferating bone tissue within a bone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.