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
According to the Cleveland Clinic, PMOS is a hormonal disorder in which the ovaries produce excess androgens, sometimes referred to as male hormones.
—
Anthony Thompson, USA Today, 12 May 2026
At the same time, hormones help regulate inflammatory signaling in the body.
—Lauryn Higgins, Flow Space, 11 May 2026
Not Enough Sleep Without enough sleep, the hunger hormone ghrelin increases, and the satiety hormone leptin decreases.
—Ashley Olivine, Verywell Health, 11 May 2026
Adding more of this hormone influences the markings on their babies’ backs—either bars or stripes—which provide different forms of camouflage in different environments.
—Jackie Flynn Mogensen, Scientific American, 10 May 2026
See All Example Sentences for hormone
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Anthony Thompson, USA Today, 12 May 2026
At the same time, hormones help regulate inflammatory signaling in the body.
—Lauryn Higgins, Flow Space, 11 May 2026
Not Enough Sleep Without enough sleep, the hunger hormone ghrelin increases, and the satiety hormone leptin decreases.
—Ashley Olivine, Verywell Health, 11 May 2026
Adding more of this hormone influences the markings on their babies’ backs—either bars or stripes—which provide different forms of camouflage in different environments.
—Jackie Flynn Mogensen, Scientific American, 10 May 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 13 May. 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
