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

Over the weekend, protests continued, with police in central Jakarta firing tear gas to disperse crowds on the streets, while some demonstrators throwing Molotov cocktails and firecrackers at a police compound.

From BBC

The vast majority of those demonstrators have been peaceful, showing up in the streets or at immigration courts where they take down the information of those being detained so ICE can’t simply “disappear” them.

From Salon

One demonstrator was seen with a placard expressing support for Dezi Freeman, a conspiracy theorist and self-described "sovereign citizen" who is accused shooting dead two police officers on his property earlier this week.

From BBC

In June, tens of thousands of demonstrators showed up for “No Kings” protests across Southern California.

From Los Angeles Times

Among the anti immigration crowd there were signs reading "stop the boats'"and "enough is enough", while counter demonstrators chanted "refugees are welcome here".

From BBC

Related Words

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