levonorgestrel

noun

le·​vo·​nor·​ges·​trel ˌlē-və-nȯr-ˈje-strəl How to pronounce levonorgestrel (audio)
: the levorotatory form of a synthetic progestin C21H28O2 used especially in oral contraceptives

Examples of levonorgestrel in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
They're composed of a synthetic hormone called levonorgestrel, writes the FDA, which has been used in birth control pills for more than 35 years. Alyssa Goldberg, The Courier-Journal, 13 Nov. 2024 In theory, levonorgestrel emergency contraception like Plan B would still be covered under the existing mandate only if it’s prescribed. Katie Camero, SELF, 9 Oct. 2024 Studies suggest that levonorgestrel, the active drug, may not work as well in people with obesity, possibly leading to drug failure and pregnancy, said Dr. Alison Edelman, an OB-GYN and researcher at Oregon Health & Science University, who studies contraception and obesity. Jonel Aleccia, Fortune Well, 7 Nov. 2023 The combination of levonorgestrel and a placebo prevented 63% of pregnancies, while the levonorgestrel-piroxicam duo prevented 95% of pregnancies, researchers found. Byerin Prater, Fortune Well, 16 Aug. 2023 See all Example Sentences for levonorgestrel 

Word History

Etymology

lev- + norgestrel, a progestin

First Known Use

1977, in the meaning defined above

Time Traveler
The first known use of levonorgestrel was in 1977

Dictionary Entries Near levonorgestrel

Cite this Entry

“Levonorgestrel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/levonorgestrel. Accessed 30 Nov. 2024.

Medical Definition

levonorgestrel

noun
le·​vo·​nor·​ges·​trel ˌlē-və-nȯr-ˈjes-trəl How to pronounce levonorgestrel (audio)
: a synthetic progestin C21H28O2 that is used especially in birth control pills and contraceptive implants and that is the levorotatory form of norgestrel see mirena, plan b, seasonale, seasonique

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