luteinizing hormone


Definition of luteinizing hormone

: a hormone secreted by the anterior lobe of the pituitary gland that in the female stimulates ovulation and the development of corpora lutea and in the male the development of interstitial tissue in the testis

Examples of luteinizing hormone in a Sentence

Recent Examples on the Web Modern Fertility’s product, with the help of its app, gives a specific value of the luteinizing hormone that leads to ovulation and tracks its level over time, instead of giving just a simple positive or negative. Beth Kowitt, Fortune, "A revolution in the ‘family planning’ aisle: pregnancy tests with baby-free branding," 17 June 2020 Or, your doctor might tell you to continue measuring the level of luteinizing hormone (which peaks 24 to 48 hours before ovulation) in your urine with an at-home test. Christina Caron, New York Times, "Getting Pregnant With IUI: What You Need to Know," 18 Apr. 2020 Here’s how that might work: The pituitary gland regulates levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which then prepare ovarian follicles for maturation. Mary Claire Lagroue, SELF, "Why Is PCOS Still So Hard for Doctors to Understand?," 12 Sep. 2019 The kits detect the presence and concentration of luteinizing hormone in urine, with levels of the hormone surging from 12 to 36 hours before ovulation. Mandy Behbehani,, "Tech boom in fertility apps aids women struggling to get pregnant," 30 July 2019 Insulin resistance may also affect how the pituitary gland regulates your levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), both of which prepare those ovarian follicles for maturation. Mary Claire Lagroue, SELF, "Can Diet and Exercise Actually Improve PCOS Symptoms?," 23 Apr. 2019 Levonorgestrel decreases in efficacy over time and doesn’t work as effectively after a sharp uptick of luteinizing hormone (LH) tells one of your ovaries to release an egg for fertilization. Natasha Lavender, SELF, "7 Myths About Emergency Contraception You Should Stop Believing," 8 Apr. 2019 At this point, your estrogen levels top off and there’s a rise in luteinizing hormone (LH), which prepares the follicle to release the egg inside of it for potential fertilization. Korin Miller, SELF, "How to Stop Your Period With Birth Control," 16 Jan. 2019 In a small clinical study conducted in Italy in the 1990s, researchers compared BBT and other natural methods (such as tracking ferning and luteinizing hormone in urine) to pelvic ultrasonography data—a surefire way to pinpoint ovulation. Beth Mole, Ars Technica, "“Natural” birth-control app dogged by unwanted pregnancies gets FDA approval," 15 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'luteinizing hormone.' 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 luteinizing hormone

1931, in the meaning defined above

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The first known use of luteinizing hormone was in 1931

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Cite this Entry

“Luteinizing hormone.” Dictionary, Merriam-Webster, Accessed 18 Jan. 2021.

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luteinizing hormone


Medical Definition of luteinizing hormone

: a glycoprotein hormone that is secreted by the adenohypophysis and that in the female stimulates ovulation and the development of the corpora lutea and together with follicle-stimulating hormone the secretion of estrogen from developing ovarian follicles and in the male the development of interstitial tissue in the testis and the secretion of testosterone abbreviation LH

called also interstitial-cell stimulating hormone, lutropin

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