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
The demonstrator performs an action thrice in response to the gestural command of the experimenter, 3–5 s following which the second experimenter gives the same gestural command to the test subject in a test trial.
—
Grrlscientist, Forbes.com, 13 Sep. 2025
What To Know During the protests in Nepal, demonstrators set fire to Parliament, attacked politicians, and pushed Prime Minister Khadga Prasad Sharma Oli to resign.
—Alia Shoaib, MSNBC Newsweek, 12 Sep. 2025
That event was still beset by confrontations, with someone jumping on a police officer, protesters smashing glass panes in the doors of the venue and members of the Proud Boys – a far-right group – clashing with demonstrators, according to local media reports.
—Curt Devine, CNN Money, 12 Sep. 2025
At least one demonstrator was hospitalized in connection with the clash, according to protesters.
—Michael Loria, USA Today, 12 Sep. 2025
See All Example Sentences for demonstrator
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Grrlscientist, Forbes.com, 13 Sep. 2025
What To Know During the protests in Nepal, demonstrators set fire to Parliament, attacked politicians, and pushed Prime Minister Khadga Prasad Sharma Oli to resign.
—Alia Shoaib, MSNBC Newsweek, 12 Sep. 2025
That event was still beset by confrontations, with someone jumping on a police officer, protesters smashing glass panes in the doors of the venue and members of the Proud Boys – a far-right group – clashing with demonstrators, according to local media reports.
—Curt Devine, CNN Money, 12 Sep. 2025
At least one demonstrator was hospitalized in connection with the clash, according to protesters.
—Michael Loria, USA Today, 12 Sep. 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 17 Sep. 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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