cortisone
noun [ U ] chemistry, biology, medical uk/ˈkɔː.tɪ.zəʊn/ us/ˈkɔːr.t̬ə.zoʊn/
可的松（用于治疗关节炎和皮肤病的一种激素）
a hormone (= a chemical made by living cells) that is used medically, especially for treating arthritis (= a painful condition of the joints) and skin problems