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.
Moving an aircraft from a demonstrator into production requires substantial investment in tooling, equipment and facilities. — Aamir Khollam, Interesting Engineering, 31 Aug. 2026 Before the game, rival demonstrators gathered outside Barclays Center to express their feelings about Cunningham’s stance on trans athletes. — Ian O'Connor, New York Times, 26 Aug. 2026 During a recent protest in the state capital of Santa Fe, the demonstrators included Jesus Rodriguez, who traveled four-plus hours from his micro-farm in southern New Mexico. — Will Weissert, Fortune, 26 Aug. 2026 Outrage over the attack led to protests that lasted several days, with angry demonstrators, many of them young people, blocking highways around the capital. — Arshad R. Zargar, CBS News, 25 Aug. 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 Sep. 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)

More from Merriam-Webster on demonstrator

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