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
Mounjaro mimics two hormones that occur naturally in the body, which regulate blood sugar and appetite; the medication slows down gastric emptying and helps the pancreas release insulin as blood sugar rises.
—
Clare Coulson,
Condé Nast Traveler,
2 July 2026
Desperate to soothe symptoms caused by unbalanced hormones, women are turning to a TikTok trend that recommends combining allergy medication and antacids to treat conditions like PMS or menopause.
—
Theara Coleman,
TheWeek,
1 July 2026
To evaluate claims of unfair advantages, strangers may request hormone or genetic testing to look for common biological variations that cisgender children and their parents may not even be aware of.
—
Megan Gandy,
The Conversation,
1 July 2026
It has been thought that hormone-replacement therapy puts women at risk for breast cancer, but newer data suggests that this is not necessarily true, and one form of estrogen seems to be associated with a decrease in breast cancer.
—
Hannah Jocelyn,
New Yorker,
1 July 2026
See All Example Sentences for hormone
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Clare Coulson,
Condé Nast Traveler,
2 July 2026
Desperate to soothe symptoms caused by unbalanced hormones, women are turning to a TikTok trend that recommends combining allergy medication and antacids to treat conditions like PMS or menopause.
—
Theara Coleman,
TheWeek,
1 July 2026
To evaluate claims of unfair advantages, strangers may request hormone or genetic testing to look for common biological variations that cisgender children and their parents may not even be aware of.
—
Megan Gandy,
The Conversation,
1 July 2026
It has been thought that hormone-replacement therapy puts women at risk for breast cancer, but newer data suggests that this is not necessarily true, and one form of estrogen seems to be associated with a decrease in breast cancer.
—
Hannah Jocelyn,
New Yorker,
1 July 2026
See All Example Sentences for hormone
Cite this Entry
“Hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hormone. Accessed 5 Jul. 2026.
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?
Merriam-Webster unabridged
