ethinylestrenol
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lynestrenol — A progestational agent, used with mestranol as an oral contraceptive. SYN: ethinylestrenol. * * * lyn·es·tre·nol lin es trə .nȯl, .nōl n a progestational steroid C20H28O used esp. in birth control pills * * * lyn·es·tre·nol (lin esґtrə nol) … Medical dictionary