prolactin

noun

pro·​lac·​tin prō-ˈlak-tən How to pronounce prolactin (audio)
: a protein hormone of the anterior lobe of the pituitary that induces lactation

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Example Sentences

Recent Examples on the Web Also, people who breastfeed experience a rise in a hormone called prolactin, which stimulates milk production and further drives down oestrogen. Melania Luisa Marte, refinery29.com, 31 July 2022 An increase in the hormone prolactin—which helps get milk going—may also have something to do with breasts feeling uncomfortable during pregnancy. Rozalynn S. Frazier, SELF, 29 July 2022 Additional ingredients include Chinese ku gua, an herb renowned for raising the firmness of erections, and zinc gluconate, which could increase testosterone and prolactin levels. Sophie Saint Thomas, Forbes, 6 June 2022 Some studies have showed evidence that ingredients in beer can increase prolactin, a hormone necessary for milk production; others have showed the opposite. Lisa Drayer, CNN, 17 Mar. 2022 Some studies have showed evidence that ingredients in beer can increase prolactin, a hormone necessary for milk production; others have showed the opposite. Lisa Drayer, CNN, 17 Mar. 2022 Some studies have showed evidence that ingredients in beer can increase prolactin, a hormone necessary for milk production; others have showed the opposite. Lisa Drayer, CNN, 17 Mar. 2022 Some studies have showed evidence that ingredients in beer can increase prolactin, a hormone necessary for milk production; others have showed the opposite. Lisa Drayer, CNN, 17 Mar. 2022 Some studies have showed evidence that ingredients in beer can increase prolactin, a hormone necessary for milk production; others have showed the opposite. Lisa Drayer, CNN, 17 Mar. 2022 See More

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

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Word History

Etymology

pro- entry 2 + lact- + -in entry 1

First Known Use

1932, in the meaning defined above

Time Traveler
The first known use of prolactin was in 1932

Dictionary Entries Near prolactin

Cite this Entry

“Prolactin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prolactin. Accessed 27 Sep. 2022.

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Medical Definition

prolactin

noun

pro·​lac·​tin prō-ˈlak-tən How to pronounce prolactin (audio)
: a protein hormone of the adenohypophysis of the pituitary gland that induces and maintains lactation in the postpartum mammalian female
abbreviation PRL

called also luteotropic hormone, luteotropin, mammotropin

More from Merriam-Webster on prolactin

Last Updated: 18 Aug 2022

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