demonstrator

noun

dem·​on·​stra·​tor ˈde-mən-ˌstrā-tər 

: 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

Hundreds of police had clashed with protesters near the university’s iconic Geisel Library throughout the morning, after authorities quickly dismantled a tent village and arrested 64 demonstrators for unlawful assembly. —Gary Robbins, San Diego Union-Tribune, 6 May 2024

The university has accused student demonstrators of engaging in the kind of activity that flies in the face of Chicago’s culture — including shouting down counter demonstrators and destroying an installation of Israeli flags. —Jeremy W. Peters Jamie Kelter Davis, New York Times, 6 May 2024

Word History

Etymology

demonstrate + -or entry 1

First Known Use

1611, in the meaning defined above

Phrases Containing demonstrator

• counter-demonstrator

Kids Definition

demonstrator

noun

dem·​on·​stra·​tor ˈdem-ən-ˌstrāt-ər 

1

: a person who makes or takes part in a demonstration

2

: a manufactured article (as an automobile) used for purposes of demonstration

Medical Definition

demonstrator

noun

dem·​on·​stra·​tor ˈdem-ən-ˌstrāt-ər 

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