プラセボ

noun

placebo

Medical term for a substance with no therapeutic effect, used in controlled trials or as a psychological treatment.

• 新しん薬やくの効こう果かを調しらべるために、患かん者じゃの一いち部ぶにプラセボを投とう与よした。

  To test the new drug's effectiveness, some patients were given a placebo.