English Dictionary

externality

/ɛkstəˈnælɪti/

noun

(uncountable) The state of being external or externalized. / (countable) A thing that is external relative to something else.

The pollution caused by the factory is an externality.

意味（1）

(uncountable) The state of being external or externalized.

But according to the theory of the externality of relations, terms acquire from their new relations an added character, which does not either condition, or necessarily alter, the character which they already possess.

意味（2）

(countable) A thing that is external relative to something else.

意味（3）

(economics, countable) An impact, positive or negative, on any party not involved in a given economic transaction or act.

Waste is a negative externality arising from consumption.