efficiency Meaning, Definition & Usage

  1. noun the ratio of the output to the input of any system
  2. noun skillfulness in avoiding wasted time and effort
    • she did the work with great efficiency

WordNet

Ef*fi"cience, Ef*fi"cien*cy noun (Also<
  • Efficience
  • Efficiency
)
Etymology
L. efficientia.
Definitions
  1. The quality of being efficient or producing an effect or effects; efficient power; effectual agency.
    The manner of this divine efficiency being far above us. Hooker.
  2. (Mech.) The ratio of useful work to energy expended. Rankine.

Webster 1913