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Medical Term:

ethynyl estradiol


a semisynthetic derivative of 17ß-estradiol; active by mouth, with a long half-life, it is among the most potent of known estrogenic compounds; used in oral contraceptive preparations.

Synonym(s): ethinyl estradiol

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.