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. 2003Vaccines 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
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This ensures compliance with regulatory requirements and prevents spoilage, which is critical for maintaining product efficacy.—Bob Violino, CNBC, 10 Mar. 2025 The safety and efficacy of weight loss gummies are generally unknown, and no evidence supports taking them.—Allison Herries, Verywell Health, 7 Mar. 2025 This includes ensuring that accurate information about vaccine safety and efficacy is disseminated.—Angelica Stabile, Fox News, 7 Mar. 2025 However, the clinical data is mixed regarding the efficacy of this treatment.—Laura Schober, Health, 7 Mar. 2025 See All Example Sentences for efficacy
Word History
Etymology
borrowed from Latin efficācia, from efficāc-, efficāx "capable of fulfilling a function, efficacious" + -ia-y entry 2
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