| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024pla•ce•bo /pləˈsiboʊ/USA pronunciation n. [countable], pl. -bos, -boes. - Medicine, Drugs
- , Medicinea substance that is not medicine but is given to a patient who supposes it to be a medicine, either to appease a patient or as a control in an experiment.
See -plac-. WordReference Random House Unabridged Dictionary of American English © 2024pla•ce•bo (plə sē′bō for 1; plä chā′bō for 2),USA pronunciation n., pl. -bos, -boes. - Medicine, Drugs
- a substance having no pharmacological effect but given merely to satisfy a patient who supposes it to be a medicine.
- a substance having no pharmacological effect but administered as a control in testing experimentally or clinically the efficacy of a biologically active preparation.
- Religion[Rom. Cath. Ch.]the vespers of the office for the dead: so called from the initial word of the first antiphon, taken from Psalm 114:9 of the Vulgate.
- Latin placēbō I shall be pleasing, acceptable
- 1175–1225 for def. 2; 1775–85 for def. 1; Middle English
Collins Concise English Dictionary © HarperCollins Publishers:: placebo /pləˈsiːbəʊ/ n ( pl -bos, -boes)- an inactive substance or other sham form of therapy administered to a patient usually to compare its effects with those of a real drug or treatment, but sometimes for the psychological benefit to the patient through his believing he is receiving treatment
- something said or done to please or humour another
- a traditional name for the vespers of the office for the dead
Etymology: 13th Century (in the ecclesiastical sense): from Latin Placebo Domino I shall please the Lord (from the opening of the office for the dead); C19 (in the medical sense) |