melorheostosis
noun
melo·rhe·os·to·sis
| \ ˌmel-ə-ˌrē-äs-ˈtō-səs
\
\
plural melorheostoses\ -ˌsēz
\
or melorheostosises
\
or melorheostosises
Medical Definition of melorheostosis
: an extremely rare form of osteosclerosis of unknown etiology characterized by asymmetrical or local enlargement and sclerotic changes in the long bones of one extremity