dem·​on·​stra·​tor | \ ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio) \

Definition of demonstrator

: 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

For three months, protests have roiled semiautonomous Hong Kong, at times paralyzing the Chinese entrepôt and turning the streets into a battleground between demonstrators and police. Amy Gunia / Hong Kong, Time, "Hong Kong Braces for Another Weekend of Protests Despite Extradition Bill Withdrawal," 6 Sep. 2019 The clashes between demonstrators and authorities were violent, with some protestors throwing bricks and Molotov cocktails, and cops responding with tear gas, beatings, and even shots. Ephrat Livni, Quartz, "Hong Kong police are marking protestors with blue dye shot from water cannons," 31 Aug. 2019 On several occasions, scuffles broke out between pro-Hong Kong demonstrators and those supporting mainland China. Dennis Normile, Science | AAAS, "Australia plans to tackle foreign influence at nation's universities," 28 Aug. 2019 While the demonstrations began fairly peacefully in March, clashes between police and demonstrators have marred recent demonstrations with tear gas, alleged police brutality, and angry confrontations at the fore of the protests. Kara Fox, CNN, "Hong Kong protesters mark one month since mob attack with sit-in demo," 21 Aug. 2019 But more fights broke out after the groups had dispersed and roved the downtown streets in smaller packs, with tense and sometimes bloody exchanges flaring up between demonstrators. Mike Baker, New York Times, "Portland Protests: Far-Right Groups and Antifa Face Off as Trump Weighs In," 17 Aug. 2019 That decision — to block the opposition from participating — turned a sleepy municipal election into a political controversy that intensified amid police crackdowns against demonstrators and opposition figures. Jen Kirby, Vox, "The pro-democracy protests rocking Moscow, explained," 13 Aug. 2019 While past nights of protest have ended in protracted standoffs between demonstrators and riot police, rally participants this time took a different tack. Yanan Wang, The Christian Science Monitor, "Why Hong Kong protests ebb and flow, like water," 5 Aug. 2019 The fund could go even further into the hole as warm weather brings more demonstrators and other public gatherings to the nation’s capital – and as the city potentially deals with new costs stemming from Trump’s address to the nation on July 4. The Washington Post, The Mercury News, "Report: Trump still owes D.C. $7 million for inauguration," 14 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'demonstrator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of demonstrator

1611, in the meaning defined above

History and Etymology for demonstrator

demonstrate + -or entry 1

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Statistics for demonstrator

Last Updated

11 Sep 2019

Look-up Popularity

Time Traveler for demonstrator

The first known use of demonstrator was in 1611

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More Definitions for demonstrator



English Language Learners Definition of demonstrator

: a person who is part of an event in which people gather together in order to show that they support or oppose something or someone : a person who participates in a demonstration
: a person who shows other people how something is used or done


dem·​on·​stra·​tor | \ ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio) \

Kids Definition of demonstrator

1 : a person who makes or takes part in a demonstration
2 : a manufactured article (as an automobile) used for demonstration


dem·​on·​stra·​tor | \ ˈdem-ən-ˌstrāt-ər How to pronounce demonstrator (audio) \

Medical Definition of demonstrator

: a teacher or teacher's assistant who demonstrates principles or theories studied (as by dissection, experiment, or chemical preparation)

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More from Merriam-Webster on demonstrator

Rhyming Dictionary: Words that rhyme with demonstrator

Spanish Central: Translation of demonstrator

Nglish: Translation of demonstrator for Spanish Speakers

Britannica English: Translation of demonstrator for Arabic Speakers

Comments on demonstrator

What made you want to look up demonstrator? Please tell us where you read or heard it (including the quote, if possible).


one from the Upper Peninsula of Michigan

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