hypnoscope

English

Etymology

hypno- +‎ -scope

Noun

hypnoscope (plural hypnoscopes)

  1. (dated) An instrument intended to determine a person's susceptibility to hypnotic influences.
    • 1889, Humboldt library of science, number 113, page 13:
      From several magnets combined von Hellenbach and Gessmann in Vienna constructed considerably stronger hypnoscopes, through which 66 per cent. of those examined showed the above mentioned sensitiveness […]

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