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nocebo

[ noh-see-boh ]

noun

  1. an inactive substance or a real medication that produces unpleasant or worsening symptoms in a patient or research participant because the person expects negative effects. Compare placebo ( def 1 ).
  2. a negative symptom experienced by a person with such expectations.


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Word History and Origins

Origin of nocebo1

1960–65; Latin nocēbō “I shall be harmful”; patterned after placebo

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