osteitis
Pronunciation: /ˌɒstɪˈʌɪtɪs/
noun
- inflammation of the substance of a bone.
- (osteitis fibrosa cystica /fʌɪˌbrəʊsə ˈsɪstɪkə/)another term for von Recklinghausen's disease (sense 2).
- (osteitis deformans /dɪˈfɔːmanz/)another term for Paget's disease (sense 1).

Origin:
mid 19th century: from Greek osteon 'bone' + -itis