demonstrator

noun

dem·​on·​stra·​tor ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
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

Word History

Etymology

demonstrate + -or entry 1

First Known Use

1593, in the meaning defined above

Time Traveler
The first known use of demonstrator was in 1593

Browse Nearby Words

Cite this Entry

“Demonstrator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/demonstrator. Accessed 8 Jul. 2025.

Kids Definition

demonstrator

noun
dem·​on·​stra·​tor ˈdem-ən-ˌstrāt-ər How to pronounce demonstrator (audio)
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 How to pronounce demonstrator (audio)
: a teacher or teacher's assistant who demonstrates principles or theories studied (as by dissection, experiment, or chemical preparation)

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