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
So far, the strongest link is between PFAS and interference in the production of hormones, which are critical for normal bodily function and play a vital role in fertility.
—
Kaitlin Sullivan, Health, 20 Apr. 2024
The supplements: magnesium and melatonin Melatonin, a hormone that helps to regulate your circadian rhythms, and magnesium, a mineral naturally found in lots of foods that can help promote relaxation, are both available as OTC supplements, and plenty of people swear by them to help with sleep.
—Ali Finney, SELF, 19 Apr. 2024
See all Example Sentences for hormone 
Kaitlin Sullivan, Health, 20 Apr. 2024
The supplements: magnesium and melatonin Melatonin, a hormone that helps to regulate your circadian rhythms, and magnesium, a mineral naturally found in lots of foods that can help promote relaxation, are both available as OTC supplements, and plenty of people swear by them to help with sleep.
—Ali Finney, SELF, 19 Apr. 2024
See all Example Sentences for hormone
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hormone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hormone. Accessed 5 May. 2024.
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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