demonstrator

Definition of Demonstrator in English :

1. demonstrator

a teacher or teacher's assistant who demonstrates the principles that are being taught

2. demonstrator, sales demonstrator

someone who demonstrates an article to a prospective buyer

3. demonstrator, protester

someone who participates in a public display of group feeling

WordNet Lexical Database for English. Princeton University. 2010.

Demonstrator

noun

1.

a person who demonstrates equipment, machines, products, etc

2.

a person who takes part in a public demonstration

3.

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

noun

1.

one that demonstrates

; specif.,

a.

a person who takes part in a public demonstration

b. US

a person who demonstrates a product

2. US

a product, as an automobile, used in demonstrations

n.

1. One that demonstrates, such as a participant in a public display of opinion.

2. An article or product used in a demonstration.