名詞 placebo:

1. an innocuous or inert medication; given as a pacifier or to the control group in experiments on the efficacy of a drug
2. (Roman Catholic Church) vespers of the office for the dead

pla.ce.bo

n.（名詞）
【復數(shù)】 pla.ce.bos 或 pla.ce.boes

Medicine A substance containing no medication and prescribed or given to reinforce a patient`s expectation to get well.
【醫(yī)學】 安慰劑：一種不含藥性的制劑，開給病人僅僅為加強他康復的希望
An inactive substance or preparation used as a control in an experiment or test to determine the effectiveness of a medicinal drug.
無效對照劑：一種無影響的物質(zhì)或制劑，用來控制試驗或確定藥物的有效程度
Something of no intrinsic remedial value that is used to appease or reassure another.
安慰的話，寬心的話：某些沒有內(nèi)在補救作用的東西，僅僅用來安慰他人
[plô-ch3.bô] Roman Catholic Church The service or office of vespers for the dead.
[plô-ch3.bô] 【羅馬天主教】 為死者做的晚禱

來源：
Middle English
中古英語
from Late Latin placôbô [I shall please (the first word of the first antiphon of the service)]
源自 后期拉丁語 placôbô [我愿意（這是唱贊美詩前說的第一句詩的第一個詞）]
first person sing. future tense of Latin placôre [to please] * see pl3k-
拉丁語 placôre的第一人稱單數(shù)將來時 [高興] *參見 pl3k-