[ pluh-see-boh ]
/ pləˈsi boʊ /
a reaction to a placebo manifested by a lessening of symptoms or the production of anticipated side effects.
Words nearby placebo effect
Origin of placebo effect
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for placebo effect
med a positive therapeutic effect claimed by a patient after receiving a placebo believed by him to be an active drugSee control group
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for placebo effect
A beneficial effect in a patient following a particular treatment that arises from the patient's expectations concerning the treatment rather than from the treatment itself.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.