efficiency

English

Etymology

From Latin efficientia.

Pronunciation
  • IPA(key): /ɪˈfɪʃn̩si/
  • (file)

Noun

efficiency (countable and uncountable, plural efficiencies)

  1. The extent to which time is well used for the intended task.
    The efficiency of the planning department is deplorable.
    • 2012 September 7, Phil McNulty, “Moldova 0-5 England”, in BBC Sport‎:
      The display and result must be placed in the context that was it was against a side that looked every bit their Fifa world ranking of 141 - but England completed the job with efficiency to record their biggest away win in 19 years.
  2. (dated) The quality of producing an effect or effects.
    • Hooker
      The manner of this divine efficiency being far above us.
  3. The extent to which a resource, such as electricity, is used for the intended purpose; the ratio of useful work to energy expended.
    The efficiency of this loudspeaker is 40%.
  4. (United States) A one-room apartment.
    I have an efficiency available June through July.
    fully-furnished efficiencies

Synonyms

Antonyms

Hyponyms
  • algorithmic efficiency
  • allocative efficiency
  • business efficiency
  • electrical efficiency
  • energy efficiency
  • fuel efficiency
  • material efficiency
  • Pareto efficiency
  • quantum efficiency
  • thermal efficiency

Derived terms
  • efficiency ratio
  • high-efficiency
  • low-efficiency

Translations
The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.
Translations to be checked

References
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