dem·​on·​stra·​tor | \ ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio) \

Definition of demonstrator

: one that demonstrates:
a : a product (such as an automobile) used to demonstrate performance or merits to prospective buyers
b : a person who engages in a public demonstration

Examples of demonstrator in a Sentence

Thousands of demonstrators marched through the streets.
Recent Examples on the Web At least one demonstrator has died during police gunfire during the protests. New York Times, 7 May 2022 While many of the technical details remain secret, Bellwether is now conducting multiple test flights of a half-scale demonstrator model. J. George Gorant, Robb Report, 4 Jan. 2022 Bystander and drone video captured most of the frenzied chain of events that followed: Rittenhouse killed Joseph Rosenbaum, 36, then shot to death protester Anthony Huber, 26, and wounded demonstrator Gaige Grosskreutz, now 28. Democrat-gazette Staff From Wire Reports, Arkansas Online, 20 Nov. 2021 The Scottish Government has been exploring and supporting the use of AI for some time, including investing in a number of demonstrator projects. Kathleen Walch, Forbes, 13 Nov. 2021 On one part of the sidewalk, longtime antiabortion demonstrator Coleman Boyd belts out a steady stream of Christian music, with lyrics about Jesus’s love for the unborn. Washington Post, 24 Aug. 2021 Gustafson’s brother, Ted, and a third demonstrator who sheriff’s deputies did not identify suffered minor injuries. San Diego Union-Tribune, 13 May 2022 During a recent clinic invasion on the West Coast, Fowler said, a demonstrator roamed up and down the halls of the clinic, yelling out a doctor’s name. Garnet Henderson, ELLE, 6 May 2022 Israeli police carry a Palestinian demonstrator away from Jerusalem's Al-Aqsa mosque compound on Friday. NBC News, 22 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'demonstrator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of demonstrator

1611, in the meaning defined above

History and Etymology for demonstrator

demonstrate + -or entry 1

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The first known use of demonstrator was in 1611

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Last Updated

13 Jun 2022

Cite this Entry

“Demonstrator.” Dictionary, Merriam-Webster, Accessed 30 Jun. 2022.

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More Definitions for demonstrator


dem·​on·​stra·​tor | \ ˈde-mən-ˌstrā-tər How to pronounce demonstrator (audio) \

Kids Definition of demonstrator

1 : a person who makes or takes part in a demonstration
2 : a manufactured article (as an automobile) used for demonstration


dem·​on·​stra·​tor | \ ˈdem-ən-ˌstrāt-ər How to pronounce demonstrator (audio) \

Medical Definition of demonstrator

: a teacher or teacher's assistant who demonstrates principles or theories studied (as by dissection, experiment, or chemical preparation)


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