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efficiency - 5 dictionary results
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ef⋅fi⋅cien⋅cy

  [i-fish-uhn-see]
Use efficiency in a Sentence
–noun, plural -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. efficiency apartment.
Origin:
1585–95; < L efficientia, equiv. to efficient- (see efficient ) + -ia -y 3

efficiency apartment

 
–noun
a small apartment consisting typically of a combined living room and bedroom area, a bathroom, and a kitchenette.
Also called efficiency.

Origin:
1925–30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To efficiency
ef·fi·cien·cy   (ĭ-fĭsh'ən-sē)   
n.   pl. ef·fi·cien·cies
    1. The quality or property of being efficient.
    2. The degree to which this quality is exercised: The program was implemented with great efficiency and speed.
    3. The ratio of the effective or useful output to the total input in any system.
    4. The ratio of the energy delivered by a machine to the energy supplied for its operation.
    1. The ratio of the effective or useful output to the total input in any system.
    2. The ratio of the energy delivered by a machine to the energy supplied for its operation.
  3. An efficiency apartment.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

efficiency ef·fi·cien·cy (ĭ-fĭsh'ən-sē)
n.

  1. The production of the desired effects or results with minimum waste of time, effort, or skill.
  2. A measure of effectiveness; specifically, the useful work output divided by the energy input in any system.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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efficiency   (ĭ-fĭsh'ən-sē)  Pronunciation Key 
  1. The ratio of the energy delivered (or work done) by a machine to the energy needed (or work required) in operating the machine. The efficiency of any machine is always less than one due to forces such as friction that use up energy unproductively. See also mechanical advantage.
  2. The ratio of the effective or useful output to the total input in any system.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Sydney Consulting Corp.
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 www.sydneyconsulting.com.au
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 Losangeles.Kijiji.com