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We found 67 dictionaries with English definitions that include the word efficiency:
Click on the first link on a line below to go directly to a page where "efficiency" is defined.

General dictionaries General (28 matching dictionaries)
  1. efficiency: Merriam-Webster.com [home, info]
  2. efficiency: Oxford Learner's Dictionaries [home, info]
  3. efficiency: American Heritage Dictionary of the English Language [home, info]
  4. efficiency: Collins English Dictionary [home, info]
  5. efficiency: Vocabulary.com [home, info]
  6. efficiency: Macmillan Dictionary [home, info]
  7. Efficiency, efficiency: Wordnik [home, info]
  8. efficiency: Cambridge Advanced Learner's Dictionary [home, info]
  9. efficiency: Wiktionary [home, info]
  10. efficiency: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. efficiency: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. efficiency: Infoplease Dictionary [home, info]
  13. efficiency: Dictionary.com [home, info]
  14. efficiency: UltraLingua English Dictionary [home, info]
  15. efficiency: Cambridge Dictionary of American English [home, info]
  16. Efficiency (Network Science), Efficiency (basketball), Efficiency (disambiguation), Efficiency (economics), Efficiency (finance), Efficiency (network science), Efficiency (statistics), Efficiency: Wikipedia, the Free Encyclopedia [home, info]
  17. Efficiency: Online Plain Text English Dictionary [home, info]
  18. efficiency: Rhymezone [home, info]
  19. efficiency, efficiency: AllWords.com Multi-Lingual Dictionary [home, info]
  20. efficiency: Webster's 1828 Dictionary [home, info]
  21. efficiency: Stammtisch Beau Fleuve Acronyms [home, info]
  22. efficiency: Free Dictionary [home, info]
  23. efficiency: Mnemonic Dictionary [home, info]
  24. efficiency: WordNet 1.7 Vocabulary Helper [home, info]
  25. efficiency: LookWAYup Translating Dictionary/Thesaurus [home, info]
  26. efficiency: Dictionary/thesaurus [home, info]

Business dictionaries Business (16 matching dictionaries)
  1. Efficiency: MoneyGlossary.com [home, info]
  2. efficiency: Travel Industry Dictionary [home, info]
  3. efficiency: INVESTORWORDS [home, info]
  4. EFFICIENCY: Accounting Glossary [home, info]
  5. Efficiency: Bloomberg Financial Glossary [home, info]
  6. efficiency: Glossary of research economics [home, info]
  7. Efficiency: Construction Term Glossary [home, info]
  8. Efficiency: FACS Journalist's Guide to Economic Terms [home, info]
  9. Efficiency: Deardorff's Glossary of International Economics [home, info]
  10. Efficiency: Futures and Options Market Terminology [home, info]
  11. Efficiency: Investopedia [home, info]
  12. Efficiency: Broadcast Media Terms [home, info]
  13. efficiency: Legal dictionary [home, info]
  14. Efficiency: Financial dictionary [home, info]
  15. Efficiency: Accounting, Business Studies and Economics Dictionary [home, info]
  16. efficiency: BusinessDictionary.com [home, info]

Computing dictionaries Computing (3 matching dictionaries)
  1. Efficiency: Cybernetics and Systems [home, info]
  2. efficiency: Dictionary of Algorithms and Data Structures [home, info]
  3. Efficiency (statistics), efficiency: Encyclopedia [home, info]

Medicine dictionaries Medicine (4 matching dictionaries)
  1. Efficiency: Medical Dictionary [home, info]
  2. efficiency: online medical dictionary [home, info]
  3. Efficiency: Glossary of Medical Education Terms [home, info]
  4. efficiency: Medical dictionary [home, info]

Miscellaneous dictionaries Miscellaneous (1 matching dictionary)
  1. efficiency: A Brief Critical Dictionary of Education [home, info]

Science dictionaries Science (4 matching dictionaries)
  1. Efficiency: Eric Weisstein's World of Physics [home, info]
  2. efficiency: Game Theory Dictionary [home, info]
  3. efficiency: PlanetMath Encyclopedia [home, info]
  4. Efficiency: Fundamental Statistics for the Behavioral Sciences [home, info]

Tech dictionaries Tech (11 matching dictionaries)
  1. efficiency: Electronics [home, info]
  2. efficiency: NATURAL RESOURCES DEFENSE COUNCIL [home, info]
  3. Efficiency: AUTOMOTIVE TERMS [home, info]
  4. Efficiency: Dairy Glossary [home, info]
  5. EFFICIENCY: Energy Terms [home, info]
  6. EFFICIENCY: Glossary of Common Hearth and Heating Terms [home, info]
  7. Efficiency: Glossary of video terms [home, info]
  8. EFFICIENCY: Lake and Water Word Glossary [home, info]
  9. Efficiency: PUMP AND SEAL TERMS [home, info]
  10. Efficiency: Glossary of Energy Terms [home, info]
  11. Efficiency: Sweetwater Music [home, info]

(Note: See efficiencys for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (efficiency)

noun:  skillfulness in avoiding wasted time and effort ("She did the work with great efficiency")
noun:  the ratio of the output to the input of any system

▸ Also see efficiencys

Words similar to efficiency

Usage examples for efficiency

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Popular adjectives describing efficiency

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Phrases that include efficiency:   efficiency apartment, thermal efficiency, efficiency engineer, luminous efficiency, weak form efficiency, more...

Words similar to efficiency:   efficiencies, more...

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