Efficiency definition

ĭ-fĭshən-sē
Frequency:
The ratio of the effective or useful output to the total input in any system.
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Efficiency is defined as the ability to produce something with a minimum amount of effort.

An example of efficiency is a reduction in the number of workers needed to make a car.

noun
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Ability to produce a desired effect, product, etc. with a minimum of effort, expense, or waste; quality or fact of being efficient.
noun
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The ratio of the energy delivered (or work done) by a machine to the energy needed (or work required) in operating the machine. The efficiency of any machine is always less than one due to forces such as friction that use up energy unproductively.
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The ratio of the effective or useful output to the total input in any system.
noun
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The ratio of effective work to the energy expended in producing it, as of a machine; output divided by input.
noun
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The extent to which time is well used for the intended task.

The efficiency of the planning department is deplorable.

noun
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The quality or property of being efficient.
noun
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The degree to which this quality is exercised.

The program was implemented with great efficiency and speed.

noun
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An efficiency apartment.
noun
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The ratio of the energy delivered by a machine to the energy supplied for its operation.
noun
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(dated) The quality of producing an effect or effects.
noun
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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%.

noun
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(United States) A one-room apartment.

I have an efficiency available June through July.

Fully-furnished efficiencies.

noun
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Other Word Forms

Noun

Singular:
efficiency
Plural:
efficiencies

Origin of efficiency

  • Latin efficientia

    From Wiktionary