esotericism

/ˌɛsəˈtɛrɪsɪzəm/
noun
  1. The quality or state of being known or understood by only a small number of people; also, a system of secret or mystical teachings.
    • Some critics argue that the esotericism of modern art alienates the general public.
    • The esotericism of the ancient mystery religions fascinated historians.
    • His interest in esotericism led him to study alchemy and astrology.
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