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.
Solidarity protests were held in several other cities, while supporters sent food and supplies to demonstrators camped in New Delhi and engaged in hunger strikes. — ABC News, 4 Aug. 2026 The attack happened in Kabal, a town in Swat Valley in Khyber Pakhtunkhwa province, where demonstrators had gathered near a police station, chanting antimilitant slogans and demanding peace, district police chief Omar Khan said. — CNN Money, 2 Aug. 2026 In the wake of Cunningham’s comments, the rallies have created tension between demonstrators and figures around the league. — Devon Henderson, New York Times, 2 Aug. 2026 ArianeGroup has completed a wet dress rehearsal of the Themis reusable booster demonstrator at the Esrange Space Centre in Sweden, European Spaceflight reports. — Eric Berger, ArsTechnica, 31 July 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 7 Aug. 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

Thesaurus: All synonyms and antonyms for demonstrator

Nglish: Translation of demonstrator for Spanish Speakers

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