Exostosis
Exostosis , noun
[New Latin, from Greek {not transcribed}; {not transcribed} out + {not transcribed} bone: compare F {not transcribed} exostose.]
1.
(Medicine) Any protuberance of a bone which is not natural; an excrescence or morbid enlargement of a bone. — Coxe
2.
(Botany) A knot formed upon or in the wood of trees by disease.