(ש"ע) מפגין; מדגים

n. one who demonstrates; one who participates in a public demonstration; one who uses a demonstration to teach or explain

See more at Wikipedia.org...

---

Noun
1. a teacher or teacher's assistant who demonstrates the principles that are being taught
(hypernym) teacher, instructor
(derivation) show, demo, exhibit, present, demonstrate
2. someone who demonstrates an article to a prospective buyer
(synonym) sales demonstrator
(hypernym) salesperson
3. someone who participates in a public display of group feeling
(synonym) protester
(hypernym) reformer, reformist, crusader, meliorist
(hyponym) counterdemonstrator
(derivation) demonstrate, march

n. demonstrant/-ka

Rzecz. demonstrant/ka