externality

/ɛkstəˈnælɪti//ɛkstɚˈnælɪti/

中文释义来自 ECDICT

词干

后缀

-ity: Used to form an uncountable noun from an adjective; especially, to form the noun referring to the state, property, or quality of conforming to the adjective's description. · Used to form a countable noun from an adjective, referring to someone or something that conforms to the adjective's description.

From external +‎ -ity. In the economic sense coined by British economist Alfred Marshall in 1890.

1uncountableThe state of being external or externalized.
2countableA thing that is external relative to something else.
3(economics, countable) An impact, positive or negative, on any party not involved in a given economic transaction or act.