Efficiency - Dictionary Definition and Overview

Efficiency :  (noun)
1: the ratio of the output to the input of any system
2: skillfulness in avoiding wasted time and effort; "she did the work with great efficiency" [ant: inefficiency]

Based on WordNet 2.0

Efficience \Ef*fi"cience\,Efficiency : \Ef*fi"cien*cy\, n. [L. efficientia.] 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.

Efficiency of a heat engine, the ratio of the work done an engine, to the work due to the heat supplied to it.

Based on WordNet (r) 2.0 (August 2003)

Example Usage of Efficiency

Lauren_Hannah: <--- Queen of Efficiency. Headed to the gate! Eat something, then off to Montegi Bay! It's about time!
Deutscher: Done! Talk about Efficiency!!
VictorBou: MC Russia Team Days over - Efficiency of 260 km/h. 12 more days of work, and then New Year Holidays!
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