demonstrator
Americannoun
-
a person or thing that demonstrates.
-
Also a person who takes part in a public demonstration, as by marching or picketing.
-
a person who explains orteaches by practical demonstrations.
-
a person who exhibits the use and application of (a product, service, etc.) to a prospective customer.
-
the product, device, machine, etc., actually used in demonstrations to purchasers or prospective customers.
They sold the demonstrator at half price.
noun
-
a person who demonstrates equipment, machines, products, etc
-
a person who takes part in a public demonstration
-
a piece of merchandise, such as a car that one test-drives, used to display merits or performance to prospective buyers
Other Word Forms
Derived Forms
Etymology
Origin of demonstrator
1605–15; < Latin dēmonstrātor, equivalent to dēmonstrā ( re ) ( see demonstrate) + -tor -tor
Explanation
If you participate in a political protest, you are a demonstrator. Demonstrate means to show, and by dint of your presence, you are showing that you agree with the protest message. Demonstrator can also mean someone who demonstrates how something works. Electrolux vacuums were sold by door-to-door salespeople who were also demonstrators––they put horrible messes down on the rug to demonstrate their vacuum's power.
Vocabulary lists containing demonstrator
Purple Hibiscus
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
The City of Ember
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Fear and Loathing in Cleveland: Trump's RNC Acceptance Speech
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Its Mark 1 demonstrator was already in final stacking in Florida, while SpaceX's Starship has yet to complete a successful in-space propellant transfer.
From BBC • May 29, 2026
Another demonstrator told the BBC she had been arrested 10 times before and expected the same outcome.
From BBC • Apr. 11, 2026
"They hate us," said demonstrator Noxolo Skomolo, a 53-year-old real-estate agent.
From Barron's • Mar. 21, 2026
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 • Mar. 8, 2026
I lived in a hostel and posed as an agricultural demonstrator who had come at the behest of the government to evaluate the land.
From "Long Walk to Freedom" by Nelson Mandela
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
