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)

Keep scrolling for more

Learn More about norethindrone

Statistics for norethindrone

Look-up Popularity

Time Traveler for norethindrone

The first known use of norethindrone was in 1958

See more words from the same year

Keep scrolling for more

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

Comments on norethindrone

What made you want to look up norethindrone? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to make a temporary encampment

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!