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
The fruit is a famous aphrodisiac, and in this season of excessive heat, sensitivity is high and hormone levels are even higher.
—
Dinkinish O’Connor, Saveur, 8 May 2025
Add smartphones and social media to the perennial teen hurdles of nerves, hormones, family, peer pressure, gendered double standards, etc., and the fodder for drama and miscommunication is endless.
—Judy Berman, Time, 8 May 2025
Starting in puberty, these glands ramp up their production of estrogen, a hormone that leads to breast development and a host of other changes to the body.
—Anna North, Vox, 6 May 2025
Others alter the levels of hormones in the womb, causing subtle changes to a baby’s brain and organs that may not be apparent at birth but can lead to a wide variety of ailments, including cancer, heart disease, infertility, early puberty, reduced IQ, and neurological disorders such as ADHD.
—Mariah Blake, The Atlantic, 5 May 2025
See All Example Sentences for hormone
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Dinkinish O’Connor, Saveur, 8 May 2025
Add smartphones and social media to the perennial teen hurdles of nerves, hormones, family, peer pressure, gendered double standards, etc., and the fodder for drama and miscommunication is endless.
—Judy Berman, Time, 8 May 2025
Starting in puberty, these glands ramp up their production of estrogen, a hormone that leads to breast development and a host of other changes to the body.
—Anna North, Vox, 6 May 2025
Others alter the levels of hormones in the womb, causing subtle changes to a baby’s brain and organs that may not be apparent at birth but can lead to a wide variety of ailments, including cancer, heart disease, infertility, early puberty, reduced IQ, and neurological disorders such as ADHD.
—Mariah Blake, The Atlantic, 5 May 2025
See All Example Sentences for hormone
Cite this Entry
“Hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hormone. Accessed 25 May. 2025.
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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