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externality

externality

13 8.3
A side effect of an action on people who are not involved, often harmful or helpful
  • noun
  • /ˌɛkstɜːrˈnælɪti/
  • Specialized
translation icon : externalidad
  • The story for today is that we have known that externalities can lead to market failures since the middle of the last century.
  • negative externalities
  • positive externalities
  • environmental externalities

OK, that is an externality because my action to smoke has killed you.

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Examples

  • The state provides some public goods, such as national defense, and it reduces negative externalities by, for example, regulating pollution.

    Academic text (1990)
  • However, we find evidence that the externality of military spending is actually negative.

    Academic text (1993)
  • In response to this externality and to the increased value of water, a different system of rights developed.

    Academic text (1992)
  • For example, one type of government intervention commonly justified by the externality argument is support for research and development.

    Academic text (1993)
  • The ability of economics to deal with these externalities has grown through the years.

    Academic text (1993)
  • The societal perspective also includes the effects of externalities, such as environmental impacts and other external costs and benefits.

    Academic text (1992)
  • The externality of air pollution affects the health of nearby residents who were not part of the industrial activity.

  • When one company pollutes a river, the negative externality can harm fishermen who rely on that waterway for their livelihoods.

  • Negative externalities like noise from a nearby airport can disturb the quality of life for local homeowners.

Synonyms

spillover
vsexternality
  • Specialized
8 5.8

An indirect effect that helps other businesses or areas beyond the original activity

affects people who are not directly involved, especially in economic situations
knock-on effect
vsexternality
  • UK
2 4.7

An indirect result of an event that causes other changes

affects other people not involved rather than emphasising a sequential chain

Surface Forms

externality singular
externalities plural

Morphology

externality = external (semi-transparent) = external + ity

Formed by nominalization of 'external' using '-ity', but the economics sense 'externality' (indirect effect) is a domain-specific extension not directly inferable by all learners.

Etymology

Externality comes from external + -ity, where external means 'outside' and -ity turns it into a 'state' or thing. So an externality is an effect that happens 'outside' the people doing an action — it affects others who are not directly involved.