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  1. Efficiency Definition & Meaning - Merriam-Webster

  2. EFFICIENCY | English meaning - Cambridge Dictionary

  3. EFFICIENCY | definition in the Cambridge English Dictionary

  4. Efficiency - Wikipedia

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

  6. EFFICIENCY definition and meaning | Collins English Dictionary

  7. EFFICIENCY Definition & Meaning | Dictionary.com

  8. Efficiency Definition & Meaning | Britannica Dictionary

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

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

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