efficiency
//ɪˈfɪʃənsi//
Noun
efficiencySingular
efficienciesPlural
1
The quality of achieving maximum productivity with minimum wasted effort or expense
The new system improved the efficiency of our production process.
2
The ratio of useful work performed to the total energy expended or heat taken in
This engine has an efficiency of 40%, meaning 40% of the fuel energy is converted to useful work.
3
A small apartment, typically consisting of a single room serving as bedroom, living room, and kitchen
She rented an efficiency near campus because it was affordable for a student.