- 1[uncountable] the quality of doing something well with no waste of time or money improvements in efficiency at the factory I was impressed by the efficiency with which she handled the crisis.
- 2efficiencies [plural] ways of wasting less time and money or of saving time or money We are looking at our business to see where savings and efficiencies can be made.
- 3[uncountable] (technology) the relationship between the amount of energy that goes into a machine or an engine, and the amount that it produces
- 4[countable] = efficiency apartment
Check pronunciation: efficiency