osteopsathyrosis
/ˌɒstɪəʊsaθɪˈrəʊsɪs/Medicine rare
noun
Fragility of the bones; any condition characterized by this, especially osteoporosis or osteogenesis imperfecta.
Origin
Mid 19th century. From German Osteopsathyrosis (now Osteopsathyrose) from French ostéopsathyrose from ostéo- + ancient Greek ψαθυρός friable, crumbling, of uncertain origin; perhaps related to ψαθάλλειν to scratch, rub. + -ose.