externality
noun
ex·ter·nal·i·ty ˌek-ˌstər-ˈna-lə-tē 
plural externalities
1
: the quality or state of being external or externalized
2
: something that is external
3
: a secondary or unintended consequence
pollution and other externalities of manufacturing
Example Sentences
Recent Examples on the Web When solar/wind replaces that plant and gets shut down, that existing negative externality is also removed from the local population. 
Frederick Daso, Forbes, 6 June 2022 The before and after that comes into such stark relief, thanks to an externality like war. Andy Meek, Forbes, 13 Mar. 2022 This is irrespective of whether such projects are cash-flow generating or create a public good that does not yield financial returns but generates a positive externality. Shreyans Jain, Quartz, 7 Mar. 2022 Such a tax would dissuade people from burning fossil fuels by taxing them for the damage those emissions cause – the negative externality. Jim Krane, The Conversation, 12 Feb. 2022 Amazon Prime, with its more than 100 million members, is a classic beneficiary of a network externality. Joe Lonsdale, WSJ, 7 Feb. 2022 That argument starts by asserting that these policies are the best means of preventing the negative externality of some people inflicting harm on innocent third parties. WSJ, 13 Jan. 2022 Another is that the poor are a negative externality of the creative destruction of capitalism. Damon Linker, The Week, 7 Jan. 2022 Thus, Singaporeans are asking why they are being held hostage by a minority, whose choice is placing a huge externality on the rest of the nation. Devadas Krishnadas, Fortune, 28 Oct. 2021 See More
Frederick Daso, Forbes, 6 June 2022 The before and after that comes into such stark relief, thanks to an externality like war. Andy Meek, Forbes, 13 Mar. 2022 This is irrespective of whether such projects are cash-flow generating or create a public good that does not yield financial returns but generates a positive externality. Shreyans Jain, Quartz, 7 Mar. 2022 Such a tax would dissuade people from burning fossil fuels by taxing them for the damage those emissions cause – the negative externality. Jim Krane, The Conversation, 12 Feb. 2022 Amazon Prime, with its more than 100 million members, is a classic beneficiary of a network externality. Joe Lonsdale, WSJ, 7 Feb. 2022 That argument starts by asserting that these policies are the best means of preventing the negative externality of some people inflicting harm on innocent third parties. WSJ, 13 Jan. 2022 Another is that the poor are a negative externality of the creative destruction of capitalism. Damon Linker, The Week, 7 Jan. 2022 Thus, Singaporeans are asking why they are being held hostage by a minority, whose choice is placing a huge externality on the rest of the nation. Devadas Krishnadas, Fortune, 28 Oct. 2021 See More Word History
First Known Use
1673, in the meaning defined at sense 1