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
Hair banking is underway at South Florida hair clinics, where doctors remove young, healthy hair follicles for cryo-preservation before they are affected by hormones or age.
—
Cindy Krischer Goodman, Sun Sentinel, 9 Apr. 2026
Estrogen patches — also known as estradiol patches — delivers the hormone estrogen via the skin, where it's absorbed to help alleviate the more distressing symptoms of menopause, like hot flashes, and vaginal dryness and burning.
—Cara Lynn Shultz, PEOPLE, 9 Apr. 2026
Better sleep itself may also support hormone health.
—Lily Hautau, CNN Money, 9 Apr. 2026
Meanwhile, carbs—the body’s primary energy source—increase your blood sugar, or blood glucose, and, in turn, trigger the pancreas to secrete insulin (a hormone that tells the body’s cells to absorb glucose to prevent an overload).
—Caroline Tien, SELF, 9 Apr. 2026
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Cindy Krischer Goodman, Sun Sentinel, 9 Apr. 2026
Estrogen patches — also known as estradiol patches — delivers the hormone estrogen via the skin, where it's absorbed to help alleviate the more distressing symptoms of menopause, like hot flashes, and vaginal dryness and burning.
—Cara Lynn Shultz, PEOPLE, 9 Apr. 2026
Better sleep itself may also support hormone health.
—Lily Hautau, CNN Money, 9 Apr. 2026
Meanwhile, carbs—the body’s primary energy source—increase your blood sugar, or blood glucose, and, in turn, trigger the pancreas to secrete insulin (a hormone that tells the body’s cells to absorb glucose to prevent an overload).
—Caroline Tien, SELF, 9 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 15 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
