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  1. Efficiency - Wikipedia

    Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r = P / C, where P is the amount of useful output ("product") …

  2. EFFICIENCY Definition & Meaning - Merriam-Webster

    The meaning of EFFICIENCY is the quality or degree of being efficient. How to use efficiency in a sentence.

  3. EFFICIENCY Definition & Meaning | Dictionary.com

    Efficiency definition: the state or quality of being efficient, or able to accomplish something with the least waste of time and effort; competency in performance..

  4. How Efficiency Is Measured - Investopedia

    May 29, 2025 · Efficiency means that an entity is operating at an optimum level of performance. It is a measurable concept that can be determined by the ratio of useful output to total input. A …

  5. EFFICIENCY | definition in the Cambridge English Dictionary

    EFFICIENCY meaning: 1. the quality of achieving the largest amount of useful work using as little energy, fuel, effort…. Learn more.

  6. EFFICIENCY definition and meaning | Collins English Dictionary

    In physics and engineering, efficiency is the ratio between the amount of energy a machine needs to make it work, and the amount it produces.

  7. Efficiency - definition of efficiency by The Free Dictionary

    1. the state or quality of being efficient. 2. accomplishment of or ability to accomplish a job with a minimum expenditure of time and effort. 3. the ratio of the work done by a machine to the …

  8. EFFICIENT Definition & Meaning - Merriam-Webster

    Efficient most often describes what is capable of producing desired results without wasting materials, time, or energy. While the word can be applied to both people and things, it is far …

  9. Home - Efficiency Smart

    Boost your home's energy efficiency and health with simple tips for weatherization, HVAC care, and cleaner air.

  10. Efficiency Definition & Meaning | Britannica Dictionary

    EFFICIENCY meaning: 1 : the ability to do something or produce something without wasting materials, time, or energy the quality or degree of being efficient (technical); 2 : efficiency …