placebo
nounmasculinetécnico/plɐˈseβu/medium
pla·ce·bo
Definition
A substance or treatment with no active therapeutic effect, given to a patient, usually in a clinical trial, for comparison with an active treatment.
Half of the trial participants received the drug, the other half a placebo.
The placebo effect can cause real improvements in symptoms due to patient expectation.
Common collocations
placebo effectplacebo groupadminister a placebo
Etymology
Do latim 'placebo' (eu agradarei), primeira pessoa do futuro do indicativo de 'placere' (agradar).