norethynodrel

American  

[nawr-uh-thahy-nuh-druhl, naw-reth-uh-nuh-drel] / ˌnɔr əˈθaɪ nə drəl, nɔˈrɛθ ə nəˌdrɛl /

noun

Pharmacology.

1. a progestin, C 2 0 H 2 6 O 2 , used in combination with an estrogen in some oral contraceptives.

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Etymology

Origin of norethynodrel

1955–60; nor- + ethyn(yl) , components of 2 versions of its chemical name + -odrel, of uncertain derivation

Example Sentences

Both norethindrone and norethynodrel provided synthetic counterparts of progesterone that overcame that limitation.

From Washington Post

One of the steps in the syntheses for preparing norethynodrel resulted in the formation of the potent estrogen mestranol as a very minor byproduct.

From Washington Post