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placebo

 
Noun placebo has 2 senses
  1. placebo - an innocuous or inert medication; given as a pacifier or to the control group in experiments on the efficacy of a drug
    --1 is a kind of
    medicine, medication, medicament, medicinal drug
    --1 has particulars: active placebo
  2. placebo - (Roman Catholic Church) vespers of the office for the dead
    --2 is a kind of
    vesper
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