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

Police kept apart demonstrators and counter-protesters by allowing them to gather on opposite sides of the River Thames, not far from parliament.

From Barron's

The space launch and technology provider said it had successfully launched its Alpha Flight 7 mission on Wednesday, delivering a demonstrator payload for defense company Lockheed Martin.

From Barron's

The demonstrations were over persistent power and water shortages, culminating in the army siding with the demonstrators.

From BBC

From Rio in Brazil to cities across France, Spain and other European countries, demonstrators marched to demand women's rights across a range of issues.

From Barron's

A demonstrator opposed to Lang, teacher Mia Kurzer, 23, told AFP she "showed up because we have to show that hate has no place in our city."

From Barron's

Related Words

• marcher
• radical
• rioter
• striker