fibrositis
noun
fi·bro·si·tis ˌfī-brə-ˈsī-təs 
ˌfi-
: a rheumatic disorder of fibrous tissue
especially : fibromyalgia
Word History
Etymology
New Latin, from fibrosus fibrous, from International Scientific Vocabulary fibrous
First Known Use
1904, in the meaning defined above
Medical Definition
fibrositis
noun
fi·bro·si·tis ˌfī-brə-ˈsīt-əs
: a rheumatic disorder of fibrous tissue
especially : fibromyalgia