Meaning of the word demonstrator in English

What does demonstrator mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

demonstrator

US /ˈdem.ən.streɪ.t̬ɚ/
UK /ˈdem.ən.streɪ.tər/

Noun

1.

a person who takes part in a public protest or demonstration

Example:
Thousands of demonstrators marched through the city streets.
Police clashed with demonstrators outside the embassy.
2.

a person who demonstrates a product or method

Example:
The sales demonstrator showed us how to use the new software.
She works as a product demonstrator at trade shows.
3.

a teaching assistant, especially in a university science department

Example:
The lab demonstrator helped the students with their experiment.
She is a physics demonstrator at the university.