demonstrator

[dem-uhn-strey-ter]

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.

demonstrator

/ 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

Other Word Forms

• counterdemonstrator noun

Word History and Origins

Origin of demonstrator¹

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

Example Sentences

He has refused to wear a poppy because of Bloody Sunday - when 13 people were shot dead when members of the British Army's Parachute Regiment opened fire on civil rights demonstrators in 1972.

Read more on BBC

While the protests were mostly peaceful, authorities said, some demonstrators broke into the state government palace in Morelia and trashed offices and other installations.

Read more on Los Angeles Times

What started as a small, peaceful protest on Alameda Street exploded into a series of tense clashes between demonstrators and law enforcement.

Read more on Los Angeles Times

On live television, enraged motorists responded by getting into physical altercations with demonstrators.

Read more on Los Angeles Times

About 30 demonstrators waving Palestinian flags hammered on the windows of the BBC Scotland headquarters at Pacific Quay and chanted "shame on the BBC" as Mr Davie gave a speech in the foyer.

Read more on BBC

Related Words

• marcher 
• radical 
• rioter www.thesaurus.com
• striker