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
Metastatic castration-resistant prostate cancer (mCRPC) is prostate cancer that has spread beyond the prostate and is no longer responding to treatments that lower testosterone, a hormone that helps prostate cancer grow.
—
Jamin Brahmbhatt, Verywell Health, 28 Apr. 2025
By contrast, cats with higher hormone levels interacted less while cats with higher testosterone were eager to escape the test area set up as part of the experiment.
—Thomas G. Moukawsher, MSNBC Newsweek, 25 Apr. 2025
Maca root is the latest superfood sweeping the internet, with people swearing it can improve hormone health, support you through perimenopause and menopause, and even increase your energy levels.
—Korin Miller, Flow Space, 25 Apr. 2025
Each is closely associated with a hormone or gland—along with a natural element and a spiritual principle.
—Tony Sanchez, Time, 25 Apr. 2025
See All Example Sentences for hormone
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Jamin Brahmbhatt, Verywell Health, 28 Apr. 2025
By contrast, cats with higher hormone levels interacted less while cats with higher testosterone were eager to escape the test area set up as part of the experiment.
—Thomas G. Moukawsher, MSNBC Newsweek, 25 Apr. 2025
Maca root is the latest superfood sweeping the internet, with people swearing it can improve hormone health, support you through perimenopause and menopause, and even increase your energy levels.
—Korin Miller, Flow Space, 25 Apr. 2025
Each is closely associated with a hormone or gland—along with a natural element and a spiritual principle.
—Tony Sanchez, Time, 25 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 5 May. 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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