eburnation/ˌɛb.ɚˈneɪ.ʃən/EtymologyFrom Latin eburnus (“of ivory”), from ebur (“ivory”). By surface analysis, eburnate + -ion.nounA degenerative process of bone, occurring at sites of articular cartilage erosion and commonly found in patients with osteoarthritis. Subchondral bone responds to increased friction by generating reactive, ivory-like dense bone at the site of erosion.