norgestrel Pharm.
(nɔːˈdʒɛstrəl)
[f. nor- + progestogen + -rel, prob. after norethynodrel.]
An artificial steroid hormone, C21H28O2, which has actions similar to those of progesterone and is used in some contraceptive pills.
| 1966 R. A. Edgren et al. in Internat. Jrnl. Fertility XI. 389 Norgestrel..is a highly potent, totally synthetic progestogen chemically related to norethisterone and norethynodrel. 1974 Nature 8 Mar. 98/3 Ovranette contains a progestogen called norgestrel which is not converted to oestrogen in the body. In fact it is actively anti-oestrogenic, reversing some of the changes brought about by oestrogen. |