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  1. Efficiency Definition & Meaning - Merriam-Webster

  2. EFFICIENCY | English meaning - Cambridge Dictionary

  3. Efficiency: What It Means in Economics, the Formula To Measure It

  4. EFFICIENCY | definition in the Cambridge English Dictionary

  5. EFFICIENCY Definition & Meaning | Dictionary.com

  6. Efficiency - Wikipedia

  7. efficiency noun - Definition, pictures, pronunciation and usage …

  8. Efficiency Definition & Meaning | Britannica Dictionary

  9. EFFICIENCY definition and meaning | Collins English Dictionary

  10. efficiency, n. meanings, etymology and more - Oxford English …

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