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 transition leading to menopause, known as perimenopause, can last several years and is characterized by fluctuating levels of hormones, including estrogen and progesterone.
—
Matthew Nudy, The Conversation, 4 Apr. 2025
Oz has been criticized for promoting medical treatments not backed by experts, such as using a combination of pregnancy hormones and a 500-calorie diet to spur weight loss.
—Ken Alltucker, USA Today, 3 Apr. 2025
The European Union has banned American beef made with growth hormones since 1989, when a prohibition on the production and importation of meat from animals treated with such hormones went into effect.
—William Gavin, Quartz, 3 Apr. 2025
Thanks to its poor ventilation, smoke and the steam from several thousand adolescent bodies with hormones in full bloom could choke a person whose senses aren’t dulled by drugs or booze by mid-concert.
—Miami Herald Archives, Miami Herald, 3 Apr. 2025
See All Example Sentences for hormone
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Matthew Nudy, The Conversation, 4 Apr. 2025
Oz has been criticized for promoting medical treatments not backed by experts, such as using a combination of pregnancy hormones and a 500-calorie diet to spur weight loss.
—Ken Alltucker, USA Today, 3 Apr. 2025
The European Union has banned American beef made with growth hormones since 1989, when a prohibition on the production and importation of meat from animals treated with such hormones went into effect.
—William Gavin, Quartz, 3 Apr. 2025
Thanks to its poor ventilation, smoke and the steam from several thousand adolescent bodies with hormones in full bloom could choke a person whose senses aren’t dulled by drugs or booze by mid-concert.
—Miami Herald Archives, Miami Herald, 3 Apr. 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 15 Apr. 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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