overstimulation
Americannoun
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an act or instance of excessively stimulating something, particularly when the result is undesirable.
Overstimulation of the economy gave us record job openings, an indication of the demand that can’t be met by the available workforce.
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Physiology, Medicine/Medical. sensory overload.
A big, extravagant party may seem like a kid-pleaser, but for many children it’s overstimulation, which can evoke anxiety, withdrawal, anger, etc.
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Biology, Physiology. especially of a gland or nerve, the act of being or becoming overactive and producing an abnormal increase in whatever substance or effect would otherwise be a normal function.
Too much thyroid hormone in the body occurs from overstimulation of the thyroid gland, but that can be regulated with medication.
The blood vessels in the lower extremities have dilated, suggesting overstimulation of the vagus nerve.
Etymology
Origin of overstimulation
First recorded in 1795–1805; over- ( def. ) + stimulation ( def. )
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This molecule activates key signaling pathways in a novel manner that benefits muscle function while avoiding the heart overstimulation typically associated with β2 agonists.
From Science Daily • Dec. 7, 2025
Cafes and teahouses in Beijing and Chengdu now double as pseudo-temples, selling fortune charms, herbal infusions, and “Stay-Up-Late Water” tonics meant to balance urban overstimulation.
From Barron's • Nov. 1, 2025
And we really do talk about overstimulation in the film, which I think is a big piece of it.
From Salon • May 5, 2023
In fact, the entire show was a frenetic rush of spectacle designed to keep people’s attention in the TikTok era of overstimulation and it was executed at the highest level possible.
From Seattle Times • Mar. 18, 2023
If the block is functional, depending upon some temporary overstimulation of the vagus nerve, atropin, which paralyzes the endings of the vagus, will naturally lift the block.
From Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. by Warfield, Louis Marshall
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
