WOTD: Efficiency
Definition of EFFICIENCY 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 3 : efficiency apartment See efficiency defined for English-language learners » See efficiency defined for kids » Examples of EFFICIENCY 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 . First Known Use of EFFICIENCY 1633 Related to EFFICIENCY Synonyms: edge , effectiveness , effectualness , efficaciousness , efficacity , efficacy , productiveness Antonyms: ineffectiveness , ineffectuality , ineffectualness , inefficiency