hor·​mone | \ ˈhȯr-ˌmōn How to pronounce hormone (audio) \

Definition of hormone

1 : a product of living cells that circulates in body fluids (such as blood) or sap and produces a specific often stimulatory effect on the activity of cells usually remote from its point of origin also : a synthetic substance that acts like a hormone

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Other Words from hormone

hormonelike \ ˈhȯr-​ˌmōn-​ˌlīk How to pronounce hormonelike (audio) \ adjective

Examples of hormone in a Sentence

Recent Examples on the Web

Long term exposure to chemicals in air fresheners can cause damage to the lungs, kidneys, central nervous system, and can even alter the body's hormones, which increases an individuals risk of cancer and can cause reproductive issues. Lindsey Campbell, House Beautiful, "19 Dangerous Household Items You Should Quit Using Immediately," 15 Feb. 2019 People need cholesterol to make hormones, vitamin D and other substances, but trouble arises when the waxy matter builds up inside the walls of arteries, hardening into plaque that restricts the flow of blood and increases the risk of heart disease. Jo Craven Mcginty, WSJ, "High Cholesterol? It Must Be January," 18 Jan. 2019 Surgery is thought to help by affecting hormones, gut bacteria and other substances that affect how the body handles insulin and blood sugar. Carla K. Johnson, The Seattle Times, "Obesity surgery may lower heart-attack danger in diabetics, study finds," 16 Oct. 2018 If low levels of iron, or high levels of male hormones, like androgens, are contributing to your hair loss, for example, both can be treated through oral supplements or medication. Jessica Chia, Allure, "The Best Hair Loss Treatments for Every Budget," 15 Oct. 2018 While most of us strive to achieve a picture-perfect complexion, annoying factors like acne, hormones, sun exposure and pollutants can wreak havoc, leaving behind spotty, scarred or dull skin. Michelle Gant, Fox News, "Get brighter, glowing skin with these tips," 21 Aug. 2018 Oncotype DX is only for women with early breast cancer that is driven by hormones, has not spread to any lymph nodes, and doesn’t overproduce the Her2 protein, a marker of aggressive tumors. Marie Mccullough, Philly.com, "What the latest news on breast cancer, chemo and genomic testing could mean for you," 5 June 2018 Here’s another interesting study on the potency of hormones, especially in understanding the different behaviors of men and women. Andrew Sullivan, Daily Intelligencer, "Is the World Done With Liberal Democracy?," 1 June 2018 Nicotine, an addictive drug, causes the body to release epinephrine, the fight or flight hormone, which could cause the head rush some describe when vaping or smoking. Jill Tucker, SFChronicle.com, "As Juul vaping surges among teens, health concerns grow," 27 May 2018

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

1905, in the meaning defined at sense 1

History and Etymology for hormone

Greek hormōn, present participle of horman to stir up, from hormē impulse, assault; akin to Greek ornynai to rouse — more at rise

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Statistics for hormone

Last Updated

11 May 2019

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Time Traveler for hormone

The first known use of hormone was in 1905

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English Language Learners Definition of hormone

: a natural substance that is produced in the body and that influences the way the body grows or develops


hor·​mone | \ ˈhȯr-ˌmōn How to pronounce hormone (audio) \

Kids Definition of hormone

: any of various chemical substances produced by body cells and released especially into the blood and having a specific effect on cells or organs of the body usually at a distance from the place of origin


hor·​mone | \ ˈhȯr-ˌmōn How to pronounce hormone (audio) \

Medical Definition of hormone

1a : a product of living cells that circulates in body fluids (as blood) or sap and produces a specific often stimulatory effect on the activity of cells usually a distance from its point of synthesis Some people develop insulin resistance, a condition in which response to the hormone is muted and the body must produce excess insulin to maintain healthy blood-glucose concentrations.— Ben Harder, Science News, 18 May 2002
b : a synthetic substance that acts like a hormone
2 : sex hormone I discovered I had the classic signs of perimenopause, the prelude to "the change" when hormones yo-yo before menstrual periods cease altogether …— Beth Witrogen McLeod, Cooking Light, April 2000

Other Words from hormone

hormonelike \ -​ˌlīk How to pronounce hormonelike (audio) \ adjective

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More from Merriam-Webster on hormone

Rhyming Dictionary: Words that rhyme with hormone

Spanish Central: Translation of hormone

Nglish: Translation of hormone for Spanish Speakers

Britannica English: Translation of hormone for Arabic Speakers

Britannica.com: Encyclopedia article about hormone

Comments on hormone

What made you want to look up hormone? Please tell us where you read or heard it (including the quote, if possible).


a sum of money that is sent as a payment

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