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norethindrone

noun
nor·​eth·​in·​drone | \ ˌnȯr-ˈe-thən-ˌdrōn How to pronounce norethindrone (audio) \

Definition of norethindrone

: a synthetic progestational hormone C20H26O2 used in birth control pills often in the form of its acetate

Examples of norethindrone in a Sentence

Recent Examples on the Web

 A few months later, the team synthesized a hormone known as norethindrone, which was originally intended to help pregnant women avoid miscarriages. — Steve Marble, latimes.com, "George Rosenkranz, the chemist who changed the world with ‘the pill,’ dies at 102," 27 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'norethindrone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of norethindrone

1958, in the meaning defined above

History and Etymology for norethindrone

nor- + ethinyl + hydr- + -one (as in progesterone)

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More Definitions for norethindrone

norethindrone

noun
nor·​eth·​in·​drone | \ nȯr-ˈeth-ən-ˌdrōn, ˌnȯr-eth-ˈin- How to pronounce norethindrone (audio) \

Medical Definition of norethindrone

: a synthetic progestational hormone C20H26O2 used in birth control pills often in the form of its acetate C22H28O3 — see loestrin, minastrin, ortho-novum

More from Merriam-Webster on norethindrone

Britannica.com: Encyclopedia article about norethindrone

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