dem·​on·​stra·​tor ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio)
: one that demonstrates:
: a product (such as an automobile) used to demonstrate performance or merits to prospective buyers
: 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 But the families of the hostages and demonstrators that came out over the weekend believe the Israeli government should be more focused on hostage retrieval than any military or security objectives. Joshua Berlinger, CNN, 1 Apr. 2024 Protesters clashed with police in Tel Aviv and Jerusalem on Saturday night, with photos and videos showing crowds of demonstrators calling for Prime Minister Benjamin Netanyahu to do more to secure the release of Israeli hostages still held by Hamas. Kelly Kasulis Cho, Washington Post, 31 Mar. 2024 Most recently, pro-Palestine demonstrators stopped traffic en route to the 2024 Academy Awards. Carly Thomas, The Hollywood Reporter, 24 Mar. 2024 Boom’s demonstrator aircraft, originally scheduled to fly in 2017, relies on a trio of 1950s-era J85 turbojet engines, the sorts used to power vintage aircraft like the Northrop T-38 trainer or F-5 fighter. Tim Stevens, The Verge, 22 Mar. 2024 Over a dozen pro-Palestine demonstrators were arrested at the Russell Senate Office Building on Thursday afternoon. Sarah Rumpf-Whitten, Fox News, 22 Mar. 2024 The implication, sources present for the briefing tell WIRED, was that the demonstrators were suspected of having ties to Hamas, which the US government classifies as a terrorist organization. Dell Cameron, WIRED, 12 Mar. 2024 The demonstrators targeted the event because the speaker was scheduled to be Ran Bar-Yoshafat, an Israeli attorney and former member of the Israeli military. Karen Garcia, Los Angeles Times, 11 Mar. 2024 Pro-Palestinian demonstrators also gathered near the Dolby Theatre ahead of the Academy Awards. Aliza Chasan, CBS News, 10 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'demonstrator.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


demonstrate + -or entry 1

First Known Use

1611, in the meaning defined above

Time Traveler
The first known use of demonstrator was in 1611

Dictionary Entries Near demonstrator

Cite this Entry

“Demonstrator.” Dictionary, Merriam-Webster, Accessed 13 Apr. 2024.

Kids Definition


dem·​on·​stra·​tor ˈdem-ən-ˌstrāt-ər How to pronounce demonstrator (audio)
: a person who makes or takes part in a demonstration
: a manufactured article (as an automobile) used for purposes of demonstration

Medical Definition


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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