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nounan innocuous or inert medication; given as a pacifier or to the control group in experiments on the efficacy of a drugtype of:
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noun(Roman Catholic Church) vespers of the office for the deadtype of:
Definition that contains placebo
- active placebo a placebo used in experimental tests of a drug that has noticeable side effects
- placebo effect any effect that seems to be a consequence of administering a placebo; the change is usually beneficial and is assumed result from the person's faith in the treatment or preconceptions about what the experimental drug was supposed to do; pharmacologists were the first to talk about placebo effects but now the idea has been generalized to many situations having nothing to do with drugs