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Definitions

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.

China’s Sichuan Kelun-Biotech Biopharmaceutical, a Merck partner, reported positive results for a late-stage trial evaluating the efficacy of sacituzumab tirumotecan, or sac-TMT.

From Barron's • May 22, 2026

China’s Sichuan Kelun-Biotech Biopharmaceutical, a Merck partner, reported positive results for a late-stage trial evaluating the efficacy of sacituzumab tirumotecan, or sac-TMT.

From Barron's • May 22, 2026

“The clean safety profile, combined with best-in-class efficacy across all doses, makes this a clean win” for Lilly, according to RBC Capital Markets analyst Trung Huynh.

From MarketWatch • May 21, 2026

After reports that vitamin K deficiency bleeding was on the rise, the American Academy of Pediatrics updated its policy statement in 2022 to stress the shot’s safety and efficacy.

From Salon • May 7, 2026

In this domain, the prize for efficacy goes to the Cantonese dialect of Chinese, whose brevity grants residents of Hong Kong a rocketing memory span of about 10 digits.

From "Outliers" by Malcolm Gladwell




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