efficiency
noun
ef·fi·cien·cy
i-ˈfi-shən-sē 
plural efficiencies
1
: the quality or degree of being efficient
2
a
: efficient operation
b(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
Synonyms
Examples of efficiency in a Sentence
Because of her efficiency, we got all the work done in a few hours.
The factory was operating at peak efficiency.
A furnace with 80 percent fuel efficiency wastes 20 percent of its fuel.
The company is trying to lower costs and improve efficiencies.
Recent Examples on the Web
Mature Java versions lack this capability and efficiency.
—
Alexander Belokrylov, Forbes, 23 Oct. 2024
Among the movements horological enhancements are two escapement wheels that provide a direct impulse to the balance for improved efficiency, stability and a longer power reserve.
—Carol Besler, Robb Report, 23 Oct. 2024
Servicers provide the wrong data to consumers, which causes friction for investors and creates an efficiency problem for servicers.
—Ryan Lawler, Axios, 23 Oct. 2024
Amid a widening gap between AI players in the U.S. and the rest of the market, and CEOs’ ongoing tussles over regulation in Europe, businesses on the continent leveraging AI to find efficiencies represent the best chance of Europe closing the gap with the States.
—Ryan Hogg, Fortune Europe, 23 Oct. 2024
See all Example Sentences for efficiency 
Alexander Belokrylov, Forbes, 23 Oct. 2024
Among the movements horological enhancements are two escapement wheels that provide a direct impulse to the balance for improved efficiency, stability and a longer power reserve.
—Carol Besler, Robb Report, 23 Oct. 2024
Servicers provide the wrong data to consumers, which causes friction for investors and creates an efficiency problem for servicers.
—Ryan Lawler, Axios, 23 Oct. 2024
Amid a widening gap between AI players in the U.S. and the rest of the market, and CEOs’ ongoing tussles over regulation in Europe, businesses on the continent leveraging AI to find efficiencies represent the best chance of Europe closing the gap with the States.
—Ryan Hogg, Fortune Europe, 23 Oct. 2024
See all Example Sentences for efficiency
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'efficiency.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Cite this Entry
“Efficiency.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/efficiency. Accessed 5 Nov. 2024.
Copy CitationKids Definition
efficiency
noun
ef·fi·cien·cy
i-ˈfish-ən-sē
plural efficiencies
1
: the quality or degree of being efficient
2
: efficient operation
3
: the ratio of the useful energy delivered by a machine to the energy supplied to it
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