populariser

/ˈpɑːpjələraɪzər/
noun
  1. A person who makes something complex or specialized easy for ordinary people to understand and enjoy.
    • Carl Sagan was a famous populariser of astronomy through his TV series.
    • The author became a populariser of ancient history with her bestselling books.
    • As a populariser of science, she gave talks that even children could follow.
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