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 Their discoveries, published in the journal Nature in 1968, ignited a new field of research that would reveal how stress hormones and other mediators change the brain, alter behavior, and impact health, in some cases accelerating disease. Randi Hutter Epstein, BostonGlobe.com, "Bruce McEwen, 81, found stress can alter the brain," 12 Feb. 2020 To grow the trees, the researchers soaked 33 ancient seeds found by archaeologists in water for 24 hours and then treated them with hormones and organic fertilizer to encourage rooting. Katie Hunt, CNN, "Date plants grown from 2,000-year-old seeds," 6 Feb. 2020 To find out, Clevers and colleagues removed stem cells from the venom glands of nine snake species—including the cape coral cobra and the western diamondback rattlesnake—and placed them in a cocktail of hormones and proteins called growth factors. Erin Malsbury, Science | AAAS, "Tiny organs grown from snake glands produce real venom," 23 Jan. 2020 Some people might have more or less hair than others, according to Dr. King, as genetics and hormones affect the distribution of body hair. Yerin Kim, Seventeen, "Here's Everything You Need To Know About Butt Hair," 23 Jan. 2020 Dip the cut end in rooting hormone and then insert the leaf into the hole with the tip of the leaf pointing away from the pot’s center. Heather Arndt Anderson, Sunset Magazine, "Five Easy Tricks to Extend Your Plant Collection for Free," 13 Jan. 2020 In recent years, several lawsuits have been filed over transgender athletes participating in sports from high school to Olympic levels, claiming hormones and other medications give the athletes an unfair advantage. Leada Gore | Lgore@al.com, al, "Tennessee bill would require transgender athletes to play as gender assigned at birth," 9 Jan. 2020 With age, gender-expansive youth can explore other options such as gender-affirming hormones and surgery. NBC News, "Media's 'detransition' narrative is fueling misconceptions, trans advocates say," 19 Dec. 2019 Cheap food, which most can afford is full of hormones and sugars. Leah Groth, Health.com, "Jillian Michaels Slams PC Diet Culture: Obesity Shouldn't Be 'Glamorized'," 9 Dec. 2019

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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Time Traveler for hormone

Time Traveler

The first known use of hormone was in 1905

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Statistics for hormone

Last Updated

16 Feb 2020

Cite this Entry

“Hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hormone. Accessed 25 Feb. 2020.

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More Definitions for hormone


How to pronounce hormone (audio)

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

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