What does efficiency mean?

Definitions for efficiencyɪˈfɪʃ ən si

Here are all the possible meanings and translations of the word efficiency.

Princeton's WordNet

  1. efficiency(noun)

    the ratio of the output to the input of any system

  2. efficiency(noun)

    skillfulness in avoiding wasted time and effort

    "she did the work with great efficiency"


  1. efficiency(Noun)

    The extent to which time is well used for the intended task.

    The efficiency of the planning department is deplorable.

  2. efficiency(Noun)

    The quality of producing an effect or effects.

  3. efficiency(Noun)

    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. efficiency(Noun)

    A one-room apartment.

  5. Origin: efficientia

Webster Dictionary

  1. Efficiency(noun)

    the quality of being efficient or producing an effect or effects; efficient power; effectual agency

  2. Efficiency(noun)

    the ratio of useful work to energy expended

  3. Origin: [L. efficientia.]

U.S. National Library of Medicine

  1. Efficiency

    Ratio of output to effort, or the ratio of effort produced to energy expended.

The Standard Electrical Dictionary

  1. Efficiency

    The relation of work done to energy absorbed. A theoretically perfect machine would have the maximum efficiency in which the two qualities named would be equal to each other. Expressed by a coefficient, q. v., the efficiency in such case would be equal to 1. If a machine produced but half the work represented by the energy it absorbed, the rest disappearing in wasteful expenditure, in heating the bearings, in overcoming the resistance of the air and in other ways, its efficiency would be expressed by the coefficient 1/2 or .5, or if one hundred was the basis, by fifty per centum. There are a number of kinds of efficiencies of an electric generator which are given below.

British National Corpus

  1. Spoken Corpus Frequency

    Rank popularity for the word 'efficiency' in Spoken Corpus Frequency: #2735

  2. Written Corpus Frequency

    Rank popularity for the word 'efficiency' in Written Corpus Frequency: #4452

  3. Nouns Frequency

    Rank popularity for the word 'efficiency' in Nouns Frequency: #1170


  1. Chaldean Numerology

    The numerical value of efficiency in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of efficiency in Pythagorean Numerology is: 4

Sample Sentences & Example Usage

  1. David Dunham:

    Efficiency is intelligent laziness.

  2. Felipe Calderon:

    The most profitable ... is energy efficiency.

  3. John F. Kennedy:

    Washington is a city of Southern efficiency and Northern charm.

  4. Amrita Sen:

    The fall in prices is trumping the efficiency gains for the summer.

  5. Joisa Dutra:

    His main immediate tasks will be to improve management's efficiency.

Images & Illustrations of efficiency

  1. efficiencyefficiencyefficiency

Translations for efficiency

From our Multilingual Translation Dictionary

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