ef·fi·cien·cy
/ɪˈfɪʃənsi/ noun plural ef·fi·cien·cies
1 : the ability to do something or produce something without wasting materials, time, or energy
: the quality or degree of being efficient [
noncount]
▪ Because of her efficiency, we got all the work done in a few hours. ▪ The factory was operating at peak efficiency. ▪ a car with greater fuel efficiency [=a car that uses fuel more efficiently] ▪ A furnace with 80 percent fuel efficiency wastes 20 percent of its fuel. [
plural] (
technical)
▪ The company is trying to lower costs and improve efficiencies.
2 [
count]
US : efficiency apartment