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efficiency
2 ENTRIES FOUND:
plural efficiencies
plural efficiencies
Learner's definition of EFFICIENCY
1
: the ability to do something or produce something without wasting materials, time, or energy : the quality or degree of being efficient效率；效能；效力
[noncount]
- Because of her efficiency, we got all the work done in a few hours.由于她的效率高，我们几个小时就干完了全部工作。
- The factory was operating at peak efficiency.工厂开足马力运转。
- a car with greater fuel efficiency [=a car that uses fuel more efficiently]油效更高的车
- A furnace with 80 percent fuel efficiency wastes 20 percent of its fuel.燃料效率达到80%的锅炉浪费了20%的燃料。
[plural]
(technical) - The company is trying to lower costs and improve efficiencies.公司正打算降低成本，提高效率。
2
efficiency
noun
ef·fi·cien·cy i-ˈfi-shən-sē 
plural efficiencies
Example Sentences
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 Lexus isn’t giving any details on how far the PHEV will be able to go on electricity alone, but the RX lineup includes two mild hybrids that combine gasoline and electricity for efficiency and performance. 
Mark Phelan, Detroit Free Press, 9 Sep. 2022 Bolstering energy efficiency and resilience is particularly top of mind at Fort George G. Meade in Maryland, which houses U.S. Cyber Command and the National Security Agency. Natalie Brand, CBS News, 31 Aug. 2022 But where should hospitals draw the line between efficiency and individual attention, between modern case management and traditional ways? BostonGlobe.com, 30 Aug. 2022 The Department of City Development has a Housing Resource Guide on its website with information about Milwaukee programs on available loans, repair and rehabilitation, energy efficiency and more. Talis Shelbourne, Journal Sentinel, 23 Aug. 2022 The NCAA Evaluation Tool will rely on game results, strength of schedule, game location, scoring margin, net offensive and defensive efficiency and quality of wins and losses. Houston Mitchell, Los Angeles Times, 22 Aug. 2022 An Apple spokeswoman said WebKit is important to protecting privacy and security, as well as promoting efficiency and performance. Miles Kruppa, WSJ, 18 Aug. 2022 In any FedEx distribution center, smart sensors and data science have radically improved efficiency and quality while lowering costs. Chakri Toleti, Forbes, 16 Aug. 2022 This efficiency is crucial to meeting the goal of leaving future generations a cleaner and healthier planet. Khalid Parekh, Forbes, 17 Aug. 2022 See More
Mark Phelan, Detroit Free Press, 9 Sep. 2022 Bolstering energy efficiency and resilience is particularly top of mind at Fort George G. Meade in Maryland, which houses U.S. Cyber Command and the National Security Agency. Natalie Brand, CBS News, 31 Aug. 2022 But where should hospitals draw the line between efficiency and individual attention, between modern case management and traditional ways? BostonGlobe.com, 30 Aug. 2022 The Department of City Development has a Housing Resource Guide on its website with information about Milwaukee programs on available loans, repair and rehabilitation, energy efficiency and more. Talis Shelbourne, Journal Sentinel, 23 Aug. 2022 The NCAA Evaluation Tool will rely on game results, strength of schedule, game location, scoring margin, net offensive and defensive efficiency and quality of wins and losses. Houston Mitchell, Los Angeles Times, 22 Aug. 2022 An Apple spokeswoman said WebKit is important to protecting privacy and security, as well as promoting efficiency and performance. Miles Kruppa, WSJ, 18 Aug. 2022 In any FedEx distribution center, smart sensors and data science have radically improved efficiency and quality while lowering costs. Chakri Toleti, Forbes, 16 Aug. 2022 This efficiency is crucial to meeting the goal of leaving future generations a cleaner and healthier planet. Khalid Parekh, Forbes, 17 Aug. 2022 See More Word History
Etymology
borrowed from Latin efficientia, from efficient-, efficiens "producing or giving rise to something, immediate (of a cause), efficient" + -ia -y entry 2
First Known Use
1633, in the meaning defined at sense 1
Time Traveler
The first known use of efficiency was in 1633 Phrases Containing efficiency
noun
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