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
2
Examples of hormone in a Sentence
Recent Examples on the Web
Experts believe that fluctuating hormone levels in women (such as during periods, pregnancy, and menopause) can increase the risk of developing HS.
—
Sarah Bradley, Health, 6 July 2024
No hormones added Hormones are not permitted to be given to chickens ever, so this term is no different than eggs sold without it.
—Susan Selasky, Detroit Free Press, 6 July 2024
Some types of surgery also reduce the amount of hunger hormones produced in the stomach.
—Amber J. Tresca, Verywell Health, 5 July 2024
Oxytocin is one of the pregnancy and postpartum hormones which naturally affects your thirst cues to encourage you to drink enough water to hydrate yourself and make breast milk.4
The color and amount of your urine is a telling clue about your level of hydration.
—Jennifer White, Parents, 3 July 2024
See all Example Sentences for hormone 
Sarah Bradley, Health, 6 July 2024
No hormones added Hormones are not permitted to be given to chickens ever, so this term is no different than eggs sold without it.
—Susan Selasky, Detroit Free Press, 6 July 2024
Some types of surgery also reduce the amount of hunger hormones produced in the stomach.
—Amber J. Tresca, Verywell Health, 5 July 2024
Oxytocin is one of the pregnancy and postpartum hormones which naturally affects your thirst cues to encourage you to drink enough water to hydrate yourself and make breast milk.4
The color and amount of your urine is a telling clue about your level of hydration.
—Jennifer White, Parents, 3 July 2024
See all Example Sentences for hormone
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hormone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hormone. Accessed 15 Jul. 2024.
Copy CitationKids Definition
hormone
noun
hor·mone
ˈhȯr-ˌmōn 
: a product of living cells that circulates in body fluids (as blood) or sap and produces a specific and often stimulating effect on cells usually at a distance from the place where it is made
Medical Definition
hormone
noun
hor·mone
ˈhȯr-ˌmōn
1
a
: 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
Ben Harder, Science News
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
Beth Witrogen McLeod, Cooking LightLove words? Need even more definitions?
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