单词 | ethinyl estradiol |
释义 | eth·i·nyl estradiol ![]() n. A synthetic estrogen derivative, C20H24O2, used in oral and other contraceptive preparations and in hormone replacement therapy, usually in combination with a progestin. [ethinyl, variant of ethynyl, containing an acetylene group : ETHYN(E) + -YL.] |
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