norethindrone

noun

nor·​eth·​in·​drone ˌnȯr-ˈe-thən-ˌdrōn 

: 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

The first generation progestin includes norethindrone and norethisterone; the second generation, levonorgestrel and norgestrel; the third generation, desogestrel, gestodene, and norgestodene; and the fourth generation progestin, drospirenone and dienogest. —Joshua Cohen, Forbes, 4 May 2023

Have had a serious allergic reaction to elagolix, estradiol, norethindrone acetate, or any of the ingredients in ORIAHNN. —Noel Mumford, Essence, 27 May 2021

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, 27 June 2019

Word History

Etymology

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

First Known Use

1958, in the meaning defined above

Medical Definition

norethindrone

noun

nor·​eth·​in·​drone nȯr-ˈeth-ən-ˌdrōn, ˌnȯr-eth-ˈin- 

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