useful efficiency

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• Efficiency — as a technical term may refer to: * Algorithmic efficiency, optimizing the speed and memory requirements of a computer program * Efficient energy use, useful work per quantity of energy ** Energy conversion efficiency, desired energy output per… …   Wikipedia

• efficiency — 1590s, power to accomplish something, from L. efficientia (from efficientem; see EFFICIENT (Cf. efficient)) + CY (Cf. cy). In mechanics, ratio of useful work done to energy expended, from 1858. Attested from 1952 as short for efficiency apartment …   Etymology dictionary

• Efficiency Movement — Part of the Politics series on Progressivism Schools American Progressivism Modern liberalism Progressive education Ideas Anti racism Civil liberties …   Wikipedia

• efficiency — efficience ef*fi cience ([e^]f*f[i^]sh ens), efficiency ef*fi cien*cy ([e^]f*f[i^]sh en*s[y^]), n. [L. efficientia.] 1. The quality of being efficient or producing an effect or effects; efficient power; effectual agency. [1913 Webster] The manner …   The Collaborative International Dictionary of English

• efficiency of a heat engine — efficience ef*fi cience ([e^]f*f[i^]sh ens), efficiency ef*fi cien*cy ([e^]f*f[i^]sh en*s[y^]), n. [L. efficientia.] 1. The quality of being efficient or producing an effect or effects; efficient power; effectual agency. [1913 Webster] The manner …   The Collaborative International Dictionary of English

• Efficiency —   Under the First Law of Thermodynamics, efficiency is the ratio of work or energy output to work or energy input, and cannot exceed 100 percent. Efficiency under the Second Law of Thermodynamics is determined by the ratio of the theoretical… …   Energy terms

• efficiency — The performance of an activity with an optimal use of resources and minimal waste. As one of the *Three E’s of Operational auditing, Flint (1988, 175, n.5) defines efficiency as obtaining maximum useful output from the resources devoted to an… …   Auditor's dictionary

• efficiency — n. (pl. ies) 1 the state or quality of being efficient. 2 Mech. & Physics the ratio of useful work performed to the total energy expended or heat taken in. Phrases and idioms: efficiency bar a point on a salary scale requiring evidence of… …   Useful english dictionary

• efficiency — noun (plural cies) Date: 1633 1. the quality or degree of being efficient 2. a. efficient operation b. (1) effective operation as measured by a comparison of production with cost (as in energy, time, and money) (2) the ratio of the useful energy… …   New Collegiate Dictionary

• efficiency — 1. The production of the desired effects or results with minimum waste of time, money, effort, or skill. 2. A measure of effectiveness; specifically, the useful work output divided by the energy input. quantum e. SYN: quantum yield …   Medical dictionary

• efficiency — noun (plural efficiencies) 1》 the state or quality of being efficient. 2》 technical the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in …   English new terms dictionary