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  1. Dictionary
    ef·fi·ca·cy
    /ˈefəkəsē/

    noun

    • 1. the ability to produce a desired or intended result: formal "there is little information on the efficacy of this treatment"

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    More definitions, origin and scrabble points

  2. www.merriam-webster.com › dictionary › efficacyEfficacy Definition & Meaning - Merriam-Webster

    The meaning of EFFICACY is the power to produce an effect. How to use efficacy in a sentence.

  3. dictionary.cambridge.org › dictionary › englishEFFICACY | 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.

  4. www.dictionary.com › e › effectiveness-vs-efficacy-vs-efficiency-when-to-use-eachEffectiveness vs. Efficacy vs. Efficiency – Differences -...

    Feb 26, 2021 · Efficacy is “capacity for producing a desired result or effect; effectiveness.” The adjective form efficacious means “capable of having the desired result or effect.” You may have encountered the word efficacy used in the term self-efficacy, which refers to a person’s belief that they can accomplish what they set out to do.

  5. www.vocabulary.com › dictionary › efficacyEfficacy - Definition, Meaning & Synonyms - Vocabulary.com

    The effectiveness, or efficacy, of something is how well it works or brings the results you hoped for. A scientist does research to determine the efficacy of a vaccine or medicine under development. If it is efficacious, it will cure or prevent a disease. "Efficacy."

  6. www.collinsdictionary.com › dictionary › englishEFFICACY 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. Recent medical studies confirm the efficacy of a healthier lifestyle.

  7. dictionary.cambridge.org › us › dictionaryEFFICACY | definition in the Cambridge English Dictionary

    EFFICACY meaning: 1. the ability of something to produce the intended result: 2. how well a particular treatment or…. Learn more.

  8. www.definitions.net › definition › efficacyWhat does efficacy mean? - Definitions.net

    Efficacy refers to the ability or effectiveness of a product, treatment, or intervention to produce the desired or intended result or outcome under controlled or ideal conditions. It is often measured through scientific research or clinical trials using specific measurements or criteria to determine its efficacy.

  9. www.oxfordlearnersdictionaries.com › definition › englishefficacy 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.

  10. www.britannica.com › dictionary › efficacyEfficacy Definition & Meaning | Britannica Dictionary

    The efficacy [= effectiveness] of this treatment has not yet been proved.

  11. www.thefreedictionary.com › efficacyEfficacy - definition of efficacy by The Free Dictionary

    Define efficacy. efficacy synonyms, efficacy pronunciation, efficacy translation, English dictionary definition of efficacy. n. Power or capacity to produce a desired effect; effectiveness.

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