成骨不全症 chénggǔbùquánzhèng osteogenesis imperfecta Origin Definitions Defs Strokes Stroke Words Sentences Sents 成骨 chénggǔ bone formation the process of bone formation; osteogenesis; ossification不全 bùquán adjective incomplete incomplete; partial; not whole; lacking something症 zhèng affixnoun disease (bound form) disease; illness; medical symptoms