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.
In 2025, demonstrators circulated online posters calling on the state’s federal delegates, including Risch, to host town halls. — Sarah Cutler, Idaho Statesman, 27 Oct. 2026 The disaster triggered protests, with demonstrators accusing him of presiding over endemic corruption — and led to the creation of the Student List. — Guy De Launey, NPR, 26 Oct. 2026 Some demonstrators panicked as tear-gas canisters landed in their midst, scattering with screams. — ABC News, 24 Oct. 2026 Slide 1 of 15 Another demonstrator, Domitille, 25, told NBC News that the people are protesting on several critical issues, including the cost of living. — Richard Engel, NBC news, 24 Oct. 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

Phrases Containing demonstrator

Rhymes for demonstrator

See All Rhymes for demonstrator

Browse Nearby Words

demonstrative
demonstrator
demonym
See all Nearby Words

Cite this Entry

“Demonstrator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/demonstrator. Accessed 1 Nov. 2026.

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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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