[ dem-uhn-strey-ter ]
See synonyms for demonstrator on
  1. a person or thing that demonstrates.

  2. Also demonstrant. a person who takes part in a public demonstration, as by marching or picketing.

  1. a person who explains orteaches by practical demonstrations.

  2. a person who exhibits the use and application of (a product, service, etc.) to a prospective customer.

  3. the product, device, machine, etc., actually used in demonstrations to purchasers or prospective customers: They sold the demonstrator at half price.

Origin of demonstrator

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

Other words from demonstrator

  • coun·ter·dem·on·stra·tor, noun

Words Nearby demonstrator Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use demonstrator in a sentence

British Dictionary definitions for demonstrator


/ (ˈdɛmənˌstreɪtə) /

  1. a person who demonstrates equipment, machines, products, etc

  2. a person who takes part in a public demonstration

  1. a piece of merchandise, such as a car that one test-drives, used to display merits or performance to prospective buyers

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012