n. 1 a person who takes part in a political demonstration etc. 2 a person who demonstrates, esp. machines, equipment, etc., to prospective customers. 3 a person who teaches by demonstration, esp. in a laboratory etc.
[ L (as DEMONSTRATE) ]
DEMONSTRATOR
Meaning of DEMONSTRATOR in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012