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
Key details include tumor size, lymph node involvement, hormone receptor status, HER2 (human epidermal growth factor receptor 2) status and tumor grade.
—
Lauryn Higgins, Flow Space, 15 June 2026
Why a metabolic drug may improve fertility Weight loss that often comes with taking GLP-1s can help with healthier hormone function, including testosterone levels, Natesh said.
—Madeline Holcombe, CNN Money, 15 June 2026
In men who develop it, hair follicles are genetically sensitive to dihydrotestosterone, or DHT, a hormone derived from testosterone.
—Jay Sparks, USA Today, 15 June 2026
Kamari Vilches comes to Cooper University Health Care's Center for LGBTQ+ Health for hormones and other things the 25-year-old needs to be a healthy trans woman.
—Stephanie Stahl, CBS News, 15 June 2026
See All Example Sentences for hormone
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Lauryn Higgins, Flow Space, 15 June 2026
Why a metabolic drug may improve fertility Weight loss that often comes with taking GLP-1s can help with healthier hormone function, including testosterone levels, Natesh said.
—Madeline Holcombe, CNN Money, 15 June 2026
In men who develop it, hair follicles are genetically sensitive to dihydrotestosterone, or DHT, a hormone derived from testosterone.
—Jay Sparks, USA Today, 15 June 2026
Kamari Vilches comes to Cooper University Health Care's Center for LGBTQ+ Health for hormones and other things the 25-year-old needs to be a healthy trans woman.
—Stephanie Stahl, CBS News, 15 June 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 21 Jun. 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
