efficiency
Listen:Concise Oxford English Dictionary © 2008 Oxford University Press:
efficiency/ɪˈfɪʃnsi/
▶noun (pl. efficiencies)
- 1 the state or quality of being efficient.
- 2 technical the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.
'efficiency' also found in these Oxford entries:
aerobic
- breathe
- cost-efficient
- dispatch
- division
- -ency
- energy audit
- ergonomics
- neat
- primitive
- soup
- supercharger
- systems analyst
- thermal efficiency
- time-and-motion study
- vitiate
- work
- work study
