demonstrator

American  

[dem-uhn-strey-ter] / ˈdɛm ənˌstreɪ tər /

noun

1. a person or thing that demonstrates.

2. Also a person who takes part in a public demonstration, as by marching or picketing.

3. a person who explains orteaches by practical demonstrations.

4. a person who exhibits the use and application of (a product, service, etc.) to a prospective customer.

5. the product, device, machine, etc., actually used in demonstrations to purchasers or prospective customers.

   They sold the demonstrator at half price.

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demonstrator British  

/ ˈdɛmənˌstreɪtə /

noun

1. a person who demonstrates equipment, machines, products, etc

2. a person who takes part in a public demonstration

3. a piece of merchandise, such as a car that one test-drives, used to display merits or performance to prospective buyers

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Other Word Forms

• counterdemonstrator noun

Etymology

Origin of demonstrator

1605–15; < Latin dēmonstrātor, equivalent to dēmonstrā ( re ) ( demonstrate ) + -tor -tor

Example Sentences

Students at universities across Tehran clashed with pro-regime demonstrators on Sunday, as anger over a brutal government crackdown spilled onto university campuses for a second straight day in a sign of rising unrest.

From The Wall Street Journal

In Iran, the BBC has verified footage of demonstrators marching on the campus of the Sharif University of Technology in the capital Tehran on Saturday.

From BBC

Cargill called on the government and demonstrators to engage in a "constructive dialogue."

From Barron's

It is not immediately clear whether any demonstrators have been arrested.

From BBC

As the Iranian motorcade left, demonstrators shouted "terrorists!" and surged forward throwing objects, with the police swiftly shoving them -- and the reporters behind -- backwards, as some tumbled over in the melee.

From Barron's

Related Words

• marcher
• radical
• rioter
• striker