Definition of "norethynodrel" []

• A steroidal progestin. (noun)

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• "It may also be called norethynodrel with mestranol."
• "Even today, norethindrone, though not norethynodrel, is still used by millions of women as an oral contraceptive."
• "One and one-half years after the first publication by the Syntex group, chemists at G.D. Searle -- a company for which Pincus consulted, synthesized a close relative, norethynodrel, which, as shown by Pincus -- is largely converted in the stomach into norethindrone."