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
The road ahead The widespread adoption of e-invoicing is becoming inevitable, driven by a combination of regulatory mandates and the relentless drive for operational efficiency.
—
Aleksandra Bal, Forbes, 22 Dec. 2024
In many cities, noise complaints can shut down licensed music venues with surprising efficiency.
—Katie Thornton, Rolling Stone, 20 Dec. 2024
The restructuring plan, announced on October 1, 2024, aims to drive operational efficiencies and improve cash flows.
—Quartz Bot, Quartz, 20 Dec. 2024
Compared with other parts of the state, there is not much room for water efficiency in the Sulphur Springs Valley.
—Clara Migoya, The Arizona Republic, 20 Dec. 2024
See all Example Sentences for efficiency 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Aleksandra Bal, Forbes, 22 Dec. 2024
In many cities, noise complaints can shut down licensed music venues with surprising efficiency.
—Katie Thornton, Rolling Stone, 20 Dec. 2024
The restructuring plan, announced on October 1, 2024, aims to drive operational efficiencies and improve cash flows.
—Quartz Bot, Quartz, 20 Dec. 2024
Compared with other parts of the state, there is not much room for water efficiency in the Sulphur Springs Valley.
—Clara Migoya, The Arizona Republic, 20 Dec. 2024
See all Example Sentences for efficiency
Cite this Entry
“Efficiency.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/efficiency. Accessed 25 Dec. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share