demonstrator Meaning, Definition & Usage

  1. noun a teacher or teacher's assistant who demonstrates the principles that are being taught
  2. noun someone who demonstrates an article to a prospective buyer
    sales demonstrator.
  3. noun someone who participates in a public display of group feeling
    protester.

WordNet


Dem"on*stra`tor noun
Etymology
L.: cf. F. démonstrateur.
Definitions
  1. One who demonstrates; one who proves anything with certainty, or establishes it by indubitable evidence.
  2. (Anat.) A teacher of practical anatomy.

Webster 1913