noun, plural pla·ce·bos, pla·ce·boes.
- a substance having no pharmacological effect but given merely to satisfy a patient who supposes it to be a medicine.
- a substance having no pharmacological effect but administered as a control in testing experimentally or clinically the efficacy of a biologically active preparation.
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Origin of placebo
Words nearby placebo
Example sentences from the Web for placebo
Proof of efficacy requires controlled studies in which some patients get plasma and others get a placebo.The US just approved the use of plasma from covid-19 survivors as a treatment|Antonio Regalado|August 24, 2020|MIT Technology Review
If members of the placebo group contract covid-19 and members of the vaccinated group don’t, that indicates success.
They vaccinated volunteers and then, 24 hours later, gave them either the experimental antibody drug or a placebo.
A large number of people are given either the vaccine or a placebo and then sent back to live their lives, assuming that some of them, at some point, will be exposed to the virus.Some Volunteers Want To Be Infected With Coronavirus To Help Find A Vaccine. But It Isn’t That Simple.|Kaleigh Rogers (firstname.lastname@example.org)|August 6, 2020|FiveThirtyEight
Mice treated with a placebo drug or Brd4 inhibitor alone fared worse.These cells slow an immune response. Derailing them could help fight tumors|Esther Landhuis|July 10, 2020|Science News
After the surgery he discovered that he had simply drunk fruit juice with added sugar and he had been given a placebo.The Week in Death: Alexander Shulgrin, Who Synthesized the Drug Ecstasy|The Telegraph|June 7, 2014|DAILY BEAST
Nobody conceived of a thing like the placebo effect or researcher bias —none of these notions had been worked out yet.Following Tuberculosis From Death Sentence to Cure|Tessa Miller|April 16, 2014|DAILY BEAST
Those who had received the actual drug reported better levels of self-satisfaction than the unfortunates who just got the placebo.Kythera Helps You Melt Your Double Chin, No Diet or Surgery Required|Daniel Gross|September 17, 2013|DAILY BEAST
The second is the placebo effect, which will often cause anything presented as medication to “work.”
Of 8,696 men taking a placebo (the comparison group), 529 (9.3 cancers per 1,000 person-years) developed the disease.
With him Placebo justifies his assentation on the ground that lords are better informed than their inferiors.The Works of Alexander Pope, Volume 1|Alexander Pope
We'll call this the placebo criticism and will come back to it, too, in a moment.
The placebo effect has become increasingly interesting to psychological as well as medical researchers.
This is a last phase of the metaphysical polity, and is only a kind of placebo.
The dirage was concluded, and vespers for the dead were now commencing with the "Placebo Domino."
British Dictionary definitions for placebo
noun plural -bos or -boes
Word Origin for placebo
Medical definitions for placebo
n. pl. pla•ce•bos
Scientific definitions for placebo
Cultural definitions for placebo
A substance containing no active drug, administered to a patient participating in a medical experiment as a control.