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Definitions

effectiveness

[ih-fek-tiv-nis, ee-fek‐] / ɪˈfɛk tɪv nɪs, iˈfɛk‐ /




Example Sentences

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According to media reports, the study used hospital patients’ vaccination status to calculate the success of the season’s vaccine, a method long used to determine flu vaccine effectiveness.

From Los Angeles Times • Apr. 14, 2026

“Skepticism remains over the effectiveness of the cease-fire agreement, leaving the market wary. Any headlines suggesting continued combat could easily trigger another round of dollar buying,” Morimoto says.

From The Wall Street Journal • Apr. 9, 2026

Intense competition is pushing manufacturers to improve effectiveness while slashing costs, sometimes to less than $1,000 per unit, making them "affordable", Myronenko said.

From Barron's • Apr. 9, 2026

By analysing millions of their genetic variants, the researchers found a pattern suggesting a link between some variants and the effectiveness of the drugs.

From BBC • Apr. 8, 2026

It was like old Mission Impossible reruns on TV: Your mission, if you decide to accept it, is to get inside this computerized robot, discover how it operates, and neutralize its effectiveness.

From "The Great Gilly Hopkins" by Katherine Paterson




Vocabulary lists containing effectiveness