stimulant
noun
stim·u·lant
ˈstim-yə-lənt 
1
: an agent (such as a drug) that produces a temporary increase of the functional activity or efficiency of an organism or any of its parts
2
: stimulus
3
: an alcoholic beverage
—not used technically
stimulant
adjective
Examples of stimulant in a Sentence
The movie was a stimulant to discussion.
the relaxed zoning regulations should serve as a stimulant for development in the area
Recent Examples on the Web
Caffeine is a stimulant, so if it's consumed (by drinking coffee, for example) when cortisol is high, that can increase stress levels that were already high at the beginning of the day.
—
Khloe Quill, FOXNews.com, 22 May 2025
Caffeine is a stimulant that impacts sleep-promoting hormones and alters sleep habits.
—Sherri Gordon, Health, 21 May 2025
Lab reports confirmed the child was suffering from an acute intoxication due to an exposure to methamphetamines or other stimulant. ...
—Mark Price, Miami Herald, 27 Mar. 2025
The expert panel is clear that beverages with caffeine and other stimulants are not recommended for children and adolescents.
—Katia Hetter, CNN, 13 Mar. 2025
See All Example Sentences for stimulant
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Khloe Quill, FOXNews.com, 22 May 2025
Caffeine is a stimulant that impacts sleep-promoting hormones and alters sleep habits.
—Sherri Gordon, Health, 21 May 2025
Lab reports confirmed the child was suffering from an acute intoxication due to an exposure to methamphetamines or other stimulant. ...
—Mark Price, Miami Herald, 27 Mar. 2025
The expert panel is clear that beverages with caffeine and other stimulants are not recommended for children and adolescents.
—Katia Hetter, CNN, 13 Mar. 2025
See All Example Sentences for stimulant
Cite this Entry
“Stimulant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stimulant. Accessed 4 Jun. 2025.
Copy CitationKids Definition
stimulant
noun
stim·u·lant
ˈstim-yə-lənt
1
: something (as a drug) that temporarily increases the activity or efficiency of the body or one of its parts
a heart stimulant
2
stimulant
adjective
Medical Definition
stimulant
noun
stim·u·lant
ˈstim-yə-lənt
1
: an agent (as a drug) that produces a temporary increase of the functional activity or efficiency of an organism or any of its parts
2
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