luteinizing hormone

noun

: 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

This is a hormone similar in structure to luteinizing hormone (LH) that tells the body when to produce testosterone. —Matthew Wosnitzer, Verywell Health, 5 Jan. 2025

Just before ovulation, luteinizing hormone (LH) spikes, triggering the egg release. —Wendy Wisner, Health, 22 Dec. 2024

During this phase, follicle-stimulating hormones (FSH) and luteinizing hormone (LH) cause a follicle to rupture and release an egg from the ovary (gland where eggs form). —Carley Millhone, Health, 13 Dec. 2024

An ovulation test kit measures your body's level of luteinizing hormone (LH), which is the hormone that triggers ovulation. —Christin Perry, Parents, 27 Nov. 2024

Word History

First Known Use

1931, in the meaning defined above

Kids Definition

luteinizing hormone

noun

lu·​tein·​iz·​ing hormone

ˈlüt-ē-ə-ˌnī-ziŋ-

: a hormone produced by the pituitary gland that in the female stimulates ovulation and the development of the corpora lutea and in the male stimulates production of testosterone by certain cells in the testis

Medical Definition

luteinizing hormone

noun

: 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