demonstrator
/ˈdɛmənstreɪtə
/noun
1A participant in a public protest meeting or march: troops opened fire on crowds of demonstrators...
- Social unrest was exploding as anti-war protestors and civil rights demonstrators used the public stage to express their views.
- The small crowd of about 1,000 demonstrators was obliged to march three kilometres from a neighbouring train station.
- Hundreds of demonstrators marched in the center of the city today to protest his visit.
2A person who shows how a piece of equipment works or how a skill or craft is performed: the demonstrators arrived and launched into a two-hour sales pitch...
- With snow not normally found at this time of year, even in the nearby Peak District, the demonstrators took to trampolines to give a display of their skills.
- The wide-ranging project will allow visitors to try their hands at age-old country crafts with the help of trained demonstrators.
- The speeches at the Placa de Tetuan were repeated four times as demonstrators continued to arrive.
2.1A person who teaches by demonstration in a laboratory: she was appointed demonstrator in botany at Newnham College...
- Peer teachers in the second year of the laboratory sequence act as demonstrators, coaches and evaluators.
- She had previously taught in secondary schools and as a demonstrator at the university.
- Up to 100 council staff left their desks to join school students and other demonstrators disrupting rush hour traffic in Bradford and York.
2.2A piece of merchandise which can be tested by potential buyers: the dealer represented the car to be new when it had been used as a demonstrator...
- The company expects to start first test flights on a demonstrator by the end of 2003.
- The team at the University of Strathclyde have proved this mathematically, and we've now built a demonstrator to test it practically.
- Following the successful completion of the demonstrator tests, the system entered full-scale development and pre-production.