EFFICACY Definition & Meaning - Merriam-Webster
The meaning of EFFICACY is the power to produce a result or effect. How to use efficacy in a sentence.
EFFICACY | English meaning - Cambridge Dictionary
EFFICACY definition: 1. the ability of something to produce the intended result: 2. how well a particular treatment or…. Learn more.
Efficacy - Wikipedia
Efficacy is the ability to perform a task to a satisfactory or expected degree. The word comes from the same roots as effectiveness, and it has often been used synonymously, although in …
EFFICACY Definition & Meaning | Dictionary.com
EFFICACY definition: the capacity for producing a desired result or effect. See examples of efficacy used in a sentence.
Efficacy - definition of efficacy by The Free Dictionary
efficacy (ˈɛfɪkəsɪ) or efficaciousness n the quality of being successful in producing an intended result; effectiveness
EFFICACY definition and meaning | Collins English Dictionary
If you talk about the efficacy of something, you are talking about its effectiveness and its ability to do what it is supposed to.
efficacy noun - Definition, pictures, pronunciation and usage …
Definition of efficacy noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
efficacy - Wiktionary, the free dictionary
Dec 11, 2025 · Efficacy refers to the beneficial effects of a program or policy under optimal conditions of delivery, whereas effectiveness refers to effects of a program or policy under …
efficacy - WordReference.com Dictionary of English
Collins Concise English Dictionary © HarperCollins Publishers:: efficacy /ˈɛfɪkəsɪ/, efficaciousness /ˌɛfɪˈkeɪʃəsnəs/ n the quality of being successful in producing an intended result; effectiveness …
efficacy | meaning of efficacy in Longman Dictionary of …
efficacy meaning, definition, what is efficacy: the ability of something to produce the ...: Learn more.