Category:Exostosis

Ex`os*to"sis, n. Etym: [NL., fr. Gr. exostose.]

1. (Med.)

Defn: Any protuberance of a bone which is not natural; an excrescence or morbid enlargement of a bone. Coxe.

2. (Bot.)

Defn: A knot formed upon or in the wood of trees by disease.