exostosis Meaning, Definition & Usage

  1. noun a benign outgrowth from a bone (usually covered with cartilage)

WordNet

Ex`os*to"sis noun
Etymology
NL., fr. Gr. out + bone: cf. F exostose.
Definitions
  1. (Med.) Any protuberance of a bone which is not natural; an excrescence or morbid enlargement of a bone. Coxe.
  2. (Bot.) A knot formed upon or in the wood of trees by disease.

Webster 1913