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externality

[ ek-ster-nal-i-tee ]
/ ˌɛk stərˈnæl ɪ ti /
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noun, plural ex·ter·nal·i·ties.
the state or quality of being external to or outside someone or something; the fact of being outer, outward, or on the surface: A child just learning to speak already has a sense of the externality of the world.
something external; an outward feature, or all outward features considered together: One can be too preoccupied with the externalities of religion.
excessive attention to external or outward features; superficiality: The article explores the externality of identity in a world of media-constructed self-image.
a side effect of some process or activity, especially a negative effect of an economic activity that is not accounted for in the price of what is produced: Externalities such as air pollution are sometimes eliminated through government regulation.They argue that there is an externality from breeding new pets, as the cute babies crowd out older pets.
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Origin of externality

First recorded in 1665–75; external + -ity

OTHER WORDS FROM externality

non·ex·ter·nal·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use externality in a sentence

British Dictionary definitions for externality

externality
/ (ˌɛkstɜːˈnælɪtɪ) /

noun plural -ties
the state or condition of being external
something external
philosophy the quality of existing independently of a perceiving mind
an economic effect that results from an economic choice but is not reflected in market prices
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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