You searched for: “efficacy”
efficacy (s) (noun), efficacies (pl)
An ability to produce an intended or desired result: The vaccine that the doctor recommended had the efficacy of being safe and effective in healing Mike's illness.
The power to get the intended result.
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The influence of information to get the intended action.
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This entry is located in the following units: -acy, -cy (page 2) fac-, facil-, fact-, feas-, -feat, -fect, -feit, -facient, -faction, -fic-, -fy, -ficate, -fication (page 10)