noun, plural ef·fi·ca·cies.
WHO SAID IT: A QUIZ ON PRESIDENTIAL WIT AND WISDOM
Origin of efficacy
OTHER WORDS FROM efficacynon·ef·fi·ca·cy, noun
Words nearby efficacy
Example sentences from the Web for efficacy
“The psychiatrists I talk with say that they want to see much stronger efficacy data,” Widge said.Elon Musk’s brain company plans a big reveal on Friday. Here’s what we already know|Verne Kopytoff|August 27, 2020|Fortune
If any of them pan out, larger clinical trials would be needed to establish efficacy.New treatments aim to treat COVID-19 early, before it gets serious|Tina Hesman Saey|August 24, 2020|Science News
Without a sense of efficacy—the feeling of having control over the conditions of their lives—I fear some may give up on the difficult process of making change.Generation Z is ‘traumatized’ by climate change—and they’re the key to fighting it|matthewheimer|August 19, 2020|Fortune
According to the statement, the Phase 1 trial will investigate the safety and efficacy of a product the company calls AGT 103-T, “a genetically modified cell product made from a person’s own cells.”FDA approves human trial for treatment to cure HIV|Lou Chibbaro Jr.|August 17, 2020|Washington Blade
Recently, though, major headlines have called the efficacy of neck gaiters into question.
On average, the vaccine has an efficacy of about 60 percent.When You Get the Flu This Winter, You Can Blame Anti-Vaxxers|Kent Sepkowitz|January 1, 2015|DAILY BEAST
The efficacy of bandying threats of going to hell met its match in the Civil War.
Most Pennsylvanians now support a moratorium on capital punishment until its efficacy can be determined.
But the conditions on the ground in Syria are not the same, and cast great doubt on the efficacy of airstrikes.
Over the next few years, local governments will make decisions that will determine their long-term solvency and efficacy.Why Progressives Shouldn’t Support Public Workers Unions|Dmitri Mehlhorn|July 11, 2014|DAILY BEAST
They estimate the efficacy of prayer by its quantity and not by its quality.Wit and Humor of the Bible|Marion D. Shutter
Of course there are some reservations to be made in the details of this way of explaining the efficacy of sacrificial banquets.The Elementary Forms of the Religious Life|Emile Durkheim
It must therefore be taken as a tax paid for the efficacy supposed to be communicated to the other branch—the 'duty to man.'The English Utilitarians, Volume II (of 3)|Leslie Stephen
"We, out here, don't believe much in the efficacy of blue blood," he said contemptuously.Wolf Breed|Jackson Gregory
We hope we have now heard enough about the efficacy of wealth for poetry, and to make poets happy.Life of Robert Burns|Thomas Carlyle