efficacy
playSimple Definition of efficacy
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: the power to produce a desired result or effect
Examples of efficacy in a sentence
In the planner's view, Rumsfeld had two goals: to demonstrate the efficacy of precision bombing and to “do the war on the cheap.” —Seymour M. Hersh, New Yorker, 7 Apr. 2003
Vaccines exist, but their efficacy against aerosolized plague is unknown. —Sharon Begley et al., Newsweek, 8 Oct. 2001
… efficacy does not have to be demonstrated before homeopathic products are marketed. —Alison Abbott et al., Nature, 26 Sept. 1996
<questioned the efficacy of the alarms in actually preventing auto theft>
Origin and Etymology of efficacy
(see efficacious)
First Known Use: 13th century
Learn More about efficacy
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Thesaurus: All synonyms and antonyms for efficacy Spanish Central: Translation of efficacy Nglish: Translation of efficacy for Spanish speakers Britannica English: Translation of efficacy for Arabic speakers Britannica.com: Encyclopedia article about efficacy
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