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Meaning of “placebo” in the English Dictionary

"placebo" in British English

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placebonoun [C]

uk   /pləˈsiː.bəʊ/ us   /pləˈsiː.boʊ/ plural placebos
a substance given to someone who is told that it is a particular medicine, either to make that person feel as if they are getting better or to compare the effect of the particular medicine when given to others: She was only given a placebo, but she claimed she got better - that's the placebo effect.
something that is given to try to satisfy a person who has not been given the thing they really want: These small concessions have been made as a placebo to stop the workers making further demands.
(Definition of placebo from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"placebo" in American English

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placebonoun [C]

us   /pləˈsi·boʊ/ plural placebos
a substance that is not medicine, but that is given to someone who is told that it is a medicine, used to test the effect of a drug or to please a patient
(Definition of placebo from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “placebo”
in Chinese (Simplified) 安慰剂, 使人宽慰的事, 安抚话…
in Chinese (Traditional) 安慰劑, 使人寬慰的事, 安撫話…
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