efficiency

== English == === Etymology === From Latin efficientia, equivalent to efficient +‎ -cy. === Pronunciation === IPA(key): /ɪˈfɪʃ.ən.si/, [ɪˈfɪʃn̩si], /ɪˈfɪʃ.ɪn.si/ === Noun === efficiency (countable and uncountable, plural efficiencies) The extent to which a resource is used for the intended purpose. Antonyms: inefficiency, wastefulness (engineering, physics) The ratio of useful work to energy expended. Often given the symbol η. The extent to which time is well used for the intended task. (dated) The quality of producing an effect or effects. (US) A one-room apartment. Synonyms: efficiency apartment, studio apartment, (UK, Ireland) bedsit ==== Hyponyms ==== ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === References === efficiency on Wikipedia.Wikipedia