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  1. EFFECTIVENESS Definition & Meaning - Merriam-Webster

    Dec 4, 2016 · Effective typically describes things—such as policies, treatments, arguments, and techniques—that do what they are intended to do. People can also be described as effective when …

  2. Effectiveness” vs. “Efficacy” vs. “Efficiency”: When To Use Each …

    Feb 26, 2021 · “Effectiveness” vs. “Efficacy” vs. “Efficiency”: When To Use Each Word For The Best Results February 26, 2021 Effectiveness Efficacy Efficiency Vaccine Efficacy vs. Effectiveness …

  3. EFFECTIVENESS | English meaning - Cambridge Dictionary

    EFFECTIVENESS definition: 1. the degree to which something is effective: 2. how well a particular treatment or drug works…. Learn more.

  4. Effectiveness - Wikipedia

    In medicine, effectiveness relates to how well a treatment works in practice, especially as shown in pragmatic clinical trials, as opposed to efficacy, which measures how well it works in explanatory …

  5. effectiveness noun - Definition, pictures, pronunciation and usage ...

    the fact of producing the result that is wanted or intended; the fact of producing a successful result. Definition of effectiveness noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, …

  6. EFFECTIVENESS definition and meaning | Collins English Dictionary

    EFFECTIVENESS definition: productive of or capable of producing a result | Meaning, pronunciation, translations and examples

  7. Effectiveness - definition of effectiveness by The Free Dictionary

    Define effectiveness. effectiveness synonyms, effectiveness pronunciation, effectiveness translation, English dictionary definition of effectiveness. adj. 1. a. Having an intended or expected effect. b. …

  8. Effectiveness Meaning, Definition, Synonym & Antonym (2025)

    Jul 26, 2025 · ‘Effectiveness’ refers to the capability of achieving an intended or expected outcome. It indicates how well a task, method, or system works in practice, especially when evaluated by results.

  9. effectiveness, n. meanings, etymology and more | Oxford English …

    effectiveness, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

  10. effectiveness - Wiktionary, the free dictionary

    Nov 1, 2025 · Noun [edit] effectiveness (countable and uncountable, plural effectivenesses) The property of being effective, of achieving results.