Wiktionary
n. (plural of efficiency English)
Usage examples of "efficiencies".
Their mobile virtual reality vans allow instant diagnosis, treatment, and even some surgeries in patients’ homes, combining the convenience of house calls with the cost efficiencies of office visits.
Although the state had become a magnet for new colonizers, the efficiencies of its ultramodern structures allowed plenty of room for public lands.
Once given a problem he could map it out and show you its strengths and weaknesses, gains and risks, and even suggest efficiencies and improvements, but he never actually proposed or thought up anything, no.
As a result, plastic solar cells have been limited to efficiencies of a few percent, low enough that their cheaper production cost doesn't compensate enough to make them commercially viable as a primary power source.
It made no sense to him, and yet at the same time it made all the sense in the world: The efficiencies of man were not the efficiencies of Dyson.