norethindrone /'nɔ:eθindrәun/ 📖 中文释义 n. [药]炔诺酮(一种口服避孕药) 📘 English Definition(英文释义) n a synthetic progestational hormone (trade name Norlutin) used in oral contraceptives and to treat endometriosis ← norethandrolone N 字母词表 norethindrone acetate →