demonstrator

noun

dem·​on·​stra·​tor ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio)
Synonyms of demonstratornext
: 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.
Widespread protests followed, along with some clashes between demonstrators and law enforcement and the deployment of the National Guard. Marlene Lenthang, NBC news, 18 May 2026 The demonstrator version will be supported by the French Defense Procurement Agency (DGA). Aditya Jadhav, Interesting Engineering, 18 May 2026 Peru has been embroiled in a long political crisis that has seen eight presidents come and go in nearly a decade of clashes between Parliament and the executive branch, and protests that left 50 demonstrators dead between 2022 and 2023. ABC News, 17 May 2026 Tens of thousands of demonstrators descended on central London on Saturday for a rally organized by far-right activist Tommy Robinson, with supporters framing the event as a protest against the erosion of British identity. Inaya Folarin Iman, CBS News, 16 May 2026 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 21 May. 2026.

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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