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norethindrone: Meaning and Definition of
nor•eth•in•drone
Pronunciation: (nr-eth'in-dr?n"), [key] ? n. Pharm.
- an orally active progestin, CHO, used as a progesterone, esp. as an oral contraceptive in combination with an estrogen.
Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease.