demonstrator
noun
dem·on·stra·tor
ˈde-mən-ˌstrā-tər 
: one that demonstrates:
a
: a product (such as an automobile) used to demonstrate performance or merits to prospective buyers
b
: a person who engages in a public demonstration
Examples of demonstrator in a Sentence
Thousands of demonstrators marched through the streets.
Recent Examples on the Web
View gallery - 4 images China's TCab Tech has successfully completed transition flight tests for its full-scale E20 eVTOL demonstrator, a major milestone that proves its aircraft can handle the most complex part of its flight envelope.
—
Abhimanyu Ghoshal, New Atlas, 6 Dec. 2025
In October, more than two million demonstrators marched through more than 100 Italian cities to protest the war in Gaza.
—Jackson Thompson, FOXNews.com, 6 Dec. 2025
During tests, the demonstrator successfully emulated real-world instantaneous reserve applications using actual grid frequency data.
—Neetika Walter, Interesting Engineering, 5 Dec. 2025
Furious protesters have clashed with federal agents outside ICE facilities and at the scene of arrests, and the Department of Homeland Security has accused some demonstrators of damaging federal property, assaulting agents and impeding law enforcement.
—Elizabeth Wolfe, CNN Money, 5 Dec. 2025
See All Example Sentences for demonstrator
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Abhimanyu Ghoshal, New Atlas, 6 Dec. 2025
In October, more than two million demonstrators marched through more than 100 Italian cities to protest the war in Gaza.
—Jackson Thompson, FOXNews.com, 6 Dec. 2025
During tests, the demonstrator successfully emulated real-world instantaneous reserve applications using actual grid frequency data.
—Neetika Walter, Interesting Engineering, 5 Dec. 2025
Furious protesters have clashed with federal agents outside ICE facilities and at the scene of arrests, and the Department of Homeland Security has accused some demonstrators of damaging federal property, assaulting agents and impeding law enforcement.
—Elizabeth Wolfe, CNN Money, 5 Dec. 2025
See All Example Sentences for demonstrator
Cite this Entry
“Demonstrator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/demonstrator. Accessed 8 Dec. 2025.
Copy CitationKids Definition
demonstrator
noun
dem·on·stra·tor
ˈdem-ən-ˌstrāt-ər
1
: a person who makes or takes part in a demonstration
2
: a manufactured article (as an automobile) used for purposes of demonstration
Medical Definition
demonstrator
noun
dem·on·stra·tor
ˈdem-ən-ˌstrāt-ər
: a teacher or teacher's assistant who demonstrates principles or theories studied (as by dissection, experiment, or chemical preparation)
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