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 delivered by a dynamic system to the energy supplied to it 3. efficiency apartment

New Collegiate Dictionary. 2001.

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  • 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

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  • efficiency — ► NOUN (pl. efficiencies) 1) the state or quality of being efficient. 2) an action intended to achieve efficiency …   English terms dictionary

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  • efficiency — [n] adeptness, effectiveness ability, abundance, adaptability, address, adequacy, capability, capableness, competence, competency, completeness, economy, effectualness, efficacy, energy, expertise, facility, faculty, know how, performance,… …   New thesaurus

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  • efficiency — Because of futures contracts standardization of terms, large numbers of traders from all walks of life may trade futures, thus allowing prices to be determined readily (it is more likely that someone will want a contract at any given price). The… …   Financial and business terms

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