|—n , pl -cies|
|1.||the quality or state of being efficient; competence; effectiveness|
|2.||See also thermal efficiency the ratio of the useful work done by a machine, engine, device, etc, to the energy supplied to it, often expressed as a percentage|
efficiency ef·fi·cien·cy (ĭ-fĭsh'ən-sē)
The production of the desired effects or results with minimum waste of time, effort, or skill.
A measure of effectiveness; specifically, the useful work output divided by the energy input in any system.
|efficiency (ĭ-fĭsh'ən-sē) Pronunciation Key