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.

---

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

---

Other Word Forms

• counterdemonstrator noun

Etymology

Origin of demonstrator

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

Example Sentences

Since the fatal shootings of two U.S. citizens in Minneapolis, clashes with demonstrators and the ouster of Kristi Noem as Homeland Security secretary, large-scale raids have quieted across U.S. cities.

From The Wall Street Journal

The jury was shown a video of a demonstrator blocking the minister's car with Wai sitting in the front passenger seat.

From BBC

The outages as well as regular shortages of food, medicine and other basics are spurring frustrations, with demonstrators vandalizing a provincial office of the Cuban Communist Party last weekend.

From Barron's

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

Related Words

• marcher
• radical
• rioter
• striker