externality

== English == === Etymology === From external +‎ -ity. In the economic sense coined by British economist Alfred Marshall in 1890. === Pronunciation === (Received Pronunciation) IPA(key): /ɛkstəˈnælɪti/ (General American) IPA(key): /ɛkstɚˈnælɪti/ (General Australian) IPA(key): /ekstəˈnælɪti/ Rhymes: -ælɪti === Noun === externality (countable and uncountable, plural externalities) (uncountable) The state of being external or externalized. (countable) A thing that is external relative to something else. (economics, countable) An impact, positive or negative, on any party not involved in a given economic transaction or act. ==== Derived terms ==== network externality nonexternality production externality ==== Translations ==== ==== See also ==== collateral damage === Further reading === externality on Wikipedia.Wikipedia