Ostran.奥斯特拉(在意大利;东经 13º09' 北纬 43º37')
OSTabbr.科学与技术处(=office of science and technology)abbr.作战适用性试验(=operational suitability testing)
osteotome for knee resection膝关节切除骨刀
osteochondrosis of os calcis跟骨结节骨软骨病
Osteosarcoma/chemotherapy骨肉瘤/化学疗法
osteosarcoma/drug therapy骨肉瘤/药物疗法
osteoarthrosis interspinalis[医] 椎间骨关节病
osteomyelitic sequesetration骨髓炎死骨形成
ostium ductus nasolacrimalis鼻泪管口
osteitis tuberculosa cystica[医] 囊状结核性骨炎, 囊状多发性结核性骨炎
osteocartilaginous exostosis骨软骨性外生骨疣
osteosclerosis myelofibrosis骨髓纤维性骨硬化