Dictionary
ef•fi•cien•cy
Pronunciation: (i-fish'un-sē), [key]—
n.,
—pl. -cies.
1. the state or quality of being efficient; competency in performance.
2. accomplishment of or ability to accomplish a job with a minimum expenditure of time and effort:
The assembly line increased industry's efficiency.
3. the ratio of the work done or energy developed by a machine, engine, etc., to the energy supplied to it, usually expressed as a percentage.
4. See
efficiency apartment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.