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Definitions

placebo

[pluh-see-boh, plah-chey-boh] / pləˈsi boʊ, plɑˈtʃeɪ boʊ /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The researchers found that participants who received abatacept for 12 months developed rheumatoid arthritis much later than those who received a placebo.

From Science Daily • Jun. 1, 2026

The other half took a 3 mg placebo pill on the same schedule.

From Science Daily • May 30, 2026

During that period, urinary 8-OHdG levels did not differ significantly between the melatonin and placebo groups.

From Science Daily • May 30, 2026

Among workers who took melatonin, urinary 8-OHdG levels were 80% higher during daytime sleep compared with those who took the placebo.

From Science Daily • May 30, 2026

As it happens, Denis Papin, who had qualified as a doctor, was the first to describe the placebo and the placebo effect, in a letter to Leibniz, 11 or 12 August 1704.

From "The Invention of Science" by David Wootton




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