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
Bruce also had the lowest levels of stress hormone metabolites, was given priority access to the four central feeding stations on account of his rank, and even had a non-mate remove debris from his lower beak, the only individual in the circus to be so honored.
—
ArsTechnica, 20 Apr. 2026
And a peak into his poos reveals that Bruce has the lowest stress hormones of any male in the circus.
—Elizabeth Anne Brown, Scientific American, 20 Apr. 2026
She’s not just intrigued by the complex interplay of the immune system and hormones that drive endometriosis but is one of the millions of American women who have it, suffering years of misdiagnosis, blackout levels of pain and infertility.
—Carolyn Y. Johnson, Washington Post, 19 Apr. 2026
Even just 10 minutes of meditation, deep breathing, or a walk outside can help lower stress hormones and inflammation.
—Lindsay Curtis, Verywell Health, 17 Apr. 2026
See All Example Sentences for hormone
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ArsTechnica, 20 Apr. 2026
And a peak into his poos reveals that Bruce has the lowest stress hormones of any male in the circus.
—Elizabeth Anne Brown, Scientific American, 20 Apr. 2026
She’s not just intrigued by the complex interplay of the immune system and hormones that drive endometriosis but is one of the millions of American women who have it, suffering years of misdiagnosis, blackout levels of pain and infertility.
—Carolyn Y. Johnson, Washington Post, 19 Apr. 2026
Even just 10 minutes of meditation, deep breathing, or a walk outside can help lower stress hormones and inflammation.
—Lindsay Curtis, Verywell Health, 17 Apr. 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 22 Apr. 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
