Medical Definition of Norethisterone
1.
(l7 alpha)-17 hydroxy-19-norpregn-4-en-20-yn-3-one. A synthetic progestational hormone with actions similar to those of progesterone but functioning as a more potent inhibitor of ovulation. It has weak oestrogenic and androgenic properties. The hormone has been used in treating amenorrhoea, functional uterine bleeding, endometriosis, and for contraception.
Pharmacological action: contraceptives, oral, synthetic, progestational hormones, synthetic.
Chemical name: 19-Norpregn-4-en-20-yn-3-one, 17-hydroxy-, (17alpha)-
(12 Dec 1998)
Lexicographical Neighbors of Norethisterone
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