Synonyms
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."
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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
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
Recent Examples on the Web
When evaluating the efficacy of MDMA, the Psychopharmacologic Drugs Advisory Committee reviewed results from two randomized studies that were published in the journal Nature Medicine.
—Solcyré Burga, TIME, 5 June 2024
There’s no question about its safety or its efficacy.
—Michael Hiltzik, Los Angeles Times, 5 June 2024
Actives are anything that actually provide efficacy and nutrients.
—Hedy Phillips, Peoplemag, 4 June 2024
Curve represents the interim cumulative incidence of clinical events, including the treatment efficacy, occurring over prespecified time in Study II.
—Fort Worth Star-Telegram, 30 May 2024
See all Example Sentences for efficacy 
Solcyré Burga, TIME, 5 June 2024
There’s no question about its safety or its efficacy.
—Michael Hiltzik, Los Angeles Times, 5 June 2024
Actives are anything that actually provide efficacy and nutrients.
—Hedy Phillips, Peoplemag, 4 June 2024
Curve represents the interim cumulative incidence of clinical events, including the treatment efficacy, occurring over prespecified time in Study II.
—Fort Worth Star-Telegram, 30 May 2024
See all Example Sentences for efficacy
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'efficacy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near efficacy
Cite this Entry
“Efficacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/efficacy. Accessed 12 Jun. 2024.
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