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
As immigration arrests have occurred across Southern California, demonstrators have protested the federal government’s actions and bystanders have sometimes confronted immigration officers or recorded their actions.
—
Andrew J. Campa, Los Angeles Times, 29 June 2025
The Baguette One vehicle is a subscale, single-stage suborbital demonstrator to prove out technologies for the larger satellite launcher, mainly its hybrid propulsion system.
—ArsTechnica, 27 June 2025
The lavish display of money and excess has provoked backlash from local residents and environmental demonstrators who protest the use of the Unesco world heritage site as a playground for the super-rich.
—Karen Gilchrist, CNBC, 27 June 2025
The burning of Jewish demonstrators in Boulder, Colorado; the killing of Israeli Embassy staffers Yaron Lischinsky and Sarah Milgram in Washington, and the murder of 6-year-old Palestinian boy Wadea Al-Fayoume in Plainfield Township are equally tragic and pointless.
—Chicago Tribune, 27 June 2025
See All Example Sentences for demonstrator
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Andrew J. Campa, Los Angeles Times, 29 June 2025
The Baguette One vehicle is a subscale, single-stage suborbital demonstrator to prove out technologies for the larger satellite launcher, mainly its hybrid propulsion system.
—ArsTechnica, 27 June 2025
The lavish display of money and excess has provoked backlash from local residents and environmental demonstrators who protest the use of the Unesco world heritage site as a playground for the super-rich.
—Karen Gilchrist, CNBC, 27 June 2025
The burning of Jewish demonstrators in Boulder, Colorado; the killing of Israeli Embassy staffers Yaron Lischinsky and Sarah Milgram in Washington, and the murder of 6-year-old Palestinian boy Wadea Al-Fayoume in Plainfield Township are equally tragic and pointless.
—Chicago Tribune, 27 June 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 13 Jul. 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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