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.
Critics say the heightened security presence is intended to deter demonstrators. — ABC News, 6 July 2026 The demonstrators carried American flags, some flown upside down, as well as Confederate flags, as police monitored the event. — Rena Rowe, The Washington Examiner, 6 July 2026 Thousands of demonstrators massed across South African cities, venting anger at undocumented foreign nationals. — Reuters, NBC news, 1 July 2026 Years of crippling sanctions have paralysed the economy as accelerating bouts of mass nationwide protests have been put down by security forces with increasing force — culminating in the killing of thousands of demonstrators in January. — Parisa Hafezi, USA Today, 3 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 Jul. 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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