Definition of efficiency in English:


Syllabification: ef·fi·cien·cy
Pronunciation: /iˈfiSHənsē

noun (plural efficiencies)

  • 1The state or quality of being efficient: greater energy efficiency
    More example sentences
    • Sri Lanka has identified health as an area where information technology should be used to boost efficiency and service quality.
    • The nation's translation industry is often criticized for its poor quality and lack of efficiency.
    • He spends most of his time assessing quality and efficiency at the plant.
    organization, order, orderliness, regulation, coherence; productivity, effectivenesscompetence, capability, ability, proficiency, adeptness, expertise, professionalism, skill, effectiveness
  • 1.1An action designed to achieve this: to increase efficiencies and improve earnings
    More example sentences
    • Some projects which were funded simply achieved budgetary efficiencies, he said, and did not require as much money as had been first thought.
    • Mr Prendergast said a constant and ongoing review is in place at Lakeland to identify where further operating efficiencies can be achieved.
    • Environmental management can achieve efficiencies in how we operate at a business level, with resulting bottom line benefits.
  • 1.2 technical The ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.
    More example sentences
    • They emit no pollutants and have impressive energy efficiencies.
    • Chiller energy efficiencies have steadily climbed over the past years.
    • They appeal because of the very high energy efficiencies they offer and the lack of environmental impact.
  • 1.3 short for efficiency apartment.


late 16th century (in the sense 'the fact of being an efficient cause'): from Latin efficientia, from efficere 'accomplish' (see effect).

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