I cannot accurately convey to you the efficiency of heroin in neutralising pain.
But U.S. car companies are also hoping that the new focus on efficiency will bring in new buyers.
It is a small agency; there are no efficiency gains to be realized by making it another bureau within Commerce.
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.