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norethynodrel

[ nawr-uh-thahy-nuh-druhl, naw-reth-uh-nuh-drel ]

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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Word History and Origins

Origin of norethynodrel1

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

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

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

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norethindroneno-return