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placebo

noun

pla·​ce·​bo plə-ˈsē-(ˌ)bō How to pronounce placebo (audio)
plural placebos
1
a
: a usually pharmacologically inert preparation prescribed more for the mental relief of the patient than for its actual effect on a disorder
b
: an inert or innocuous substance used especially in controlled experiments testing the efficacy of another substance (such as a drug)
2
: something tending to soothe

Did you know?

Doctors doing research on new treatments for disease often give one group a placebo while a second group takes the new medication. Since those in the placebo group usually believe they're getting the real thing, their own hopeful attitude may bring about improvement in their condition. Thus, for the real drug to be considered effective, it must produce even better results than the placebo. Placebos have another use as well. A doctor who suspects that a patient's physical symptoms are psychologically produced may prescribe a placebo in the hope that mentally produced symptoms can also be mentally cured.

Example Sentences

Recent Examples on the Web In a clinical study on the technology, users of it had about 2,400 more hairs on their scalp after six months than those who used a placebo, GH Beauty Lab data analysis confirmed. April Franzino, Good Housekeeping, 16 Sep. 2022 The trial’s main endpoint was how overall cognition changed over the three-year period in those who’d taken cocoa extract versus a placebo. Jonathan Wosen, STAT, 16 Sep. 2022 Participants took the probiotics or the placebo for a few months, along with their regular meds. Laura Newberry, Los Angeles Times, 13 Sep. 2022 The results were quite remarkable: Of those people who received pain processing therapy twice-weekly for a month, 52 percent were pain-free at one year, compared with 27 percent of those receiving placebo and 16 percent receiving usual care. Haider Warraich, Scientific American, 8 Sep. 2022 The findings of both studies counter a study done in 2020 in Mexico City, where health professionals were given either 4,000 IU of vitamin D a day or a placebo. Sandee Lamotte, CNN, 7 Sep. 2022 And in yet another study, men and women who drank 16 ounces of tart cherry juice a day for 12 weeks had significantly lower systolic blood pressure and LDL cholesterol than those who drank a placebo. Jessie Shafer, Better Homes & Gardens, 6 Sep. 2022 As a control, some were given a placebo instead of progesterone. WIRED, 6 Sep. 2022 The placebo’s effects were small, in absolute terms, and didn’t exaggerate Vascepa’s benefits, the company said. Betsy Mckay, WSJ, 5 Sep. 2022 See More

Word History

Etymology

Latin, I shall please

First Known Use

1785, in the meaning defined at sense 1a

Time Traveler
The first known use of placebo was in 1785

Phrases Containing placebo

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