noun, plural ef·fi·cien·cies.
Origin of efficiency
Examples from the Web for efficiencies
Contemporary Examples of efficiencies
And both natural gas and efficiencies benefit the environment and promise some move toward long-term sustainability.Obama-Republican Fight Over Gas Prices Is Pure Political Theater
April 18, 2012
Historical Examples of efficiencies
It is the most efficient type of water-wheel, efficiencies of 90 per cent.
How do you account for any differences in the efficiencies found?
The efficiencies are shown along the bottom line, and the 100 per cent.A Rational Wages System
These efficiencies are in terms of the most efficient (yellow-green) light.
Of course, the efficiencies of light-sources are usually of interest to the consumer if they are expressed in terms of cost.