efficiency

play
noun ef·fi·cien·cy \i-ˈfi-shən-sē\

Definition of efficiency

plural

efficiencies

  1. 1 :  the quality or degree of being efficient

  2. 2a :  efficient operationb (1) :  effective operation as measured by a comparison of production with cost (as in energy, time, and money) (2) :  the ratio of the useful energy delivered by a dynamic system to the energy supplied to it

  3. 3 :  efficiency apartment

Examples of efficiency in a Sentence

  1. Because of her efficiency, we got all the work done in a few hours.

  2. The factory was operating at peak efficiency.

  3. A furnace with 80 percent fuel efficiency wastes 20 percent of its fuel.

  4. The company is trying to lower costs and improve efficiencies.

Recent Examples of efficiency from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'efficiency'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of efficiency

1633


EFFICIENCY Defined for English Language Learners

efficiency

play
noun

Definition of efficiency for English Language Learners

  • : the ability to do something or produce something without wasting materials, time, or energy : the quality or degree of being efficient ( technical )


EFFICIENCY Defined for Kids

efficiency

play
noun ef·fi·cien·cy \i-ˈfi-shən-sē\

Definition of efficiency for Students

plural

efficiencies

  1. :  the ability to do something or produce something without waste



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