(medicine) A dummy medicine containing no active ingredients; an inert treatment. / (Roman Catholicism) The vespers sung in the office for the dead.

plural of placebo

plural of placebo

(pharmacology) The tendency of any medication or treatment, even an inert or ineffective one, to exhibit results simply because the recipient believes that it will work.

plural of placebo effect

A push-button with apparent functionality that actually has no effect when pressed.

plural of placebo button

Having characteristics of a placebo.

Describing the generation of the placebo effect

(genealogy, medicine) A group of genes thought to affect an individual's response to placebo medication.