levonorgestrel

noun
le·​vo·​nor·​ges·​trel | \ ˌlē-və-nȯr-ˈje-strəl How to pronounce levonorgestrel (audio) \

Definition of levonorgestrel

: the levorotatory form of a synthetic progestin C21H28O2 used especially in oral contraceptives

Examples of levonorgestrel in a Sentence

Recent Examples on the Web

Ella is among the more common brands of emergency contraceptive pills containing ulipristal acetate (which requires a prescription), and Plan B contains levonorgestrel (and is available over the counter). Brittney Mcnamara, Allure, "Shrill Is Right About the Impact of Your Weight on the Morning-After Pill's Efficacy," 25 Mar. 2019 Ella is one of the more common brands of emergency contraceptive pills containing ulipristal acetate (which requires a prescription), while Plan B contains levonorgestrel (and is available over the counter). Brittney Mcnamara, Teen Vogue, "Emergency Contraceptives May Be Less Effective for People Over a Certain Weight," 19 Mar. 2019 The researchers found that, overall, IUDs containing 52 micrograms of levonorgestrel (that would be Mirena and Liletta—the others contain less of the hormone) seemed to be similarly effective at seven years as at three and five. Korin Miller, SELF, "When Is It OK to Get Your IUD Removed?," 12 Mar. 2019 Hormonal IUDs contain the hormone levonorgestrel, which changes your uterine lining to create much lighter periods. Hannah Orenstein, Seventeen, "What's the Best Form of Birth Control for You?," 31 Oct. 2017 Hormonal IUDs contain the hormone levonorgestrel, which changes your uterine lining to create much lighter periods. Hannah Orenstein, Seventeen, "What's the Best Form of Birth Control for You?," 31 Oct. 2017 Hormonal IUDs contain the hormone levonorgestrel, which changes your uterine lining to create much lighter periods. Hannah Orenstein, Seventeen, "What's the Best Form of Birth Control for You?," 31 Oct. 2017 Hormonal IUDs are coated with a synthetic progestin called levonorgestrel. Korin Miller, SELF, "Is There Any Reliable Way to Make Your Period Come Faster?," 11 July 2018 Mirena, Kyleena, Liletta, and Skyla—that release levonorgestrel, a type of progesterone, into the uterus every day. Lori Keong, Marie Claire, "If You’re Freaking Out About Getting an IUD, Here’s What to Know About the Insertion Process," 30 Oct. 2017

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

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First Known Use of levonorgestrel

1977, in the meaning defined above

History and Etymology for levonorgestrel

lev- + norgestrel, a progestin

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The first known use of levonorgestrel was in 1977

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More Definitions for levonorgestrel

levonorgestrel

noun
le·​vo·​nor·​ges·​trel | \ ˌlē-və-nȯr-ˈjes-trəl How to pronounce levonorgestrel (audio) \

Medical Definition of levonorgestrel

: 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

More from Merriam-Webster on levonorgestrel

Britannica.com: Encyclopedia article about levonorgestrel

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