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 hormone (audio) \ adjective

Examples of hormone in a Sentence

Recent Examples on the Web Parabens, though commonly used to preserve shampoo formulas, may cause hormone disruption. Sydney Poe, chicagotribune.com, "What is the best purple shampoo?," 4 Apr. 2021 Later in their teenage years, transgender adolescents can consider hormone replacement therapies, such as estrogen for trans girls and testosterone for trans boys, which create more permanent changes to their bodies. Washington Post, "Arkansas passes bill restricting access to medical treatments for transgender children," 29 Mar. 2021 Additionally, women with PCOS who have gained weight may produce too much of the hormone insulin. Kimberly Wilson, Essence, "What Women Need to Know About PCOS Right Now," 25 Mar. 2021 Tangerines in particular, but also a wide swath of oranges, mandarins, lemons, and grapefruit, contained a fungicide (imazalil) that the EWG says has been linked to cancer and hormone irregularities. Zee Krstic, Good Housekeeping, "Which Produce Made the Dirty Dozen List? Take a Look at Full 2021 Rankings," 17 Mar. 2021 These hormone-hijacking chemicals, which include phthalates, bisphenol A, and flame retardants, among others, have become ubiquitous in modern life. Stacey Colino, Scientific American, "Reproductive Problems in Both Men and Women Are Rising at an Alarming Rate," 16 Mar. 2021 Among the ingredients is insulin, the same hormone humans, fish, and many other animals make to keep their blood-sugar levels in check. Katherine J. Wu, The Atlantic, "Cone Snails Are Liars and Murderers," 12 Mar. 2021 Research tells us that each of these stages plays a role in reinforcing the cardiovascular and immune systems and helps regulate metabolism and hormone levels. Hadley Mendelsohn, House Beautiful, "Having Trouble Sleeping? 5 Easy Things You Can Do Tonight to Get Your Sleep Schedule Back on Track," 11 Mar. 2021 Among other things, scientists will run blood tests to identify elevated hormone and sperm levels. Meghan Overdeep, Southern Living, "Research Expedition Seeks to Prove That Great White Sharks Hunt for Love off the Outer Banks," 10 Mar. 2021

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

7 Apr 2021

Cite this Entry

“Hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hormone. Accessed 16 Apr. 2021.

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More Definitions for hormone



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 hormone (audio) \ adjective

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More from Merriam-Webster on 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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