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efficacy

[ef-i-kuh-see] / ˈɛf ɪ kə si /


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.

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“That insight, compounded with proven technologies, promises incredibly high efficacy when personalized.”

From Science Daily ● Oct. 23, 2026

There’s a rich conversation about the efficacy of influential figures such as gangster Casper Holstein and writer Carl Van Vechten, who helped finance and support, respectively, members of the Harlem Renaissance and their work.

From Salon ● Oct. 19, 2026

Scientific evidence is lacking, and doctors and regulators have raised concerns about the widespread use, safety and efficacy of the substances.

From The Wall Street Journal ● Oct. 9, 2026

At the same time, he is ambivalent about the efficacy of outright bans on school devices.

From Los Angeles Times ● Sep. 14, 2026

Eisenhower, now fully alive to the limitations of the scientific advice Strauss had been feeding him, disingenuously asked him to explain the discord in the scientific community about the efficacy of monitoring.

From "Big Science" by Michael Hiltzik

For young kids, there are now two vaccines available with very similar mechanisms but different doses, dosing intervals and efficacies.

From Scientific American ● Jun. 15, 2022

Still, the vaccines, shown in clinical trials to have efficacies of up to 95% against symptomatic disease, have finally given the world the prospect of an escape from COVID-19’s long siege.

From Science Magazine ● Feb. 16, 2021

Further tests would be needed to judge how much the 2P mutation contributes to the overall efficacies of the frontrunner vaccines.

From National Geographic ● Dec. 31, 2020

Obsessed with holistic health, we are also susceptible to pitches about the mysterious efficacies of neurons and transmitters.

From Slate ● Jan. 7, 2014

In the face of the Relief Pills exposure, Hal could no longer excuse his father on the ground that Dr. Surtaine honestly credited his medicines with impossible efficacies.

From The Clarion by William Dodge Stevens


Vocabulary lists containing efficacy

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