externality

[ ek-ster-nal-i-tee ]
/ ˌɛk stərˈnæl ɪ ti /

noun, plural ex·ter·nal·i·ties.

the state or quality of being external.
something external; an outward feature.
excessive attention to externals.
an external effect, often unforeseen or unintended, accompanying a process or activity: to eliminate externalities such as air pollution through government regulation.

Origin of externality

First recorded in 1665–75; external + -ity

Related forms

non·ex·ter·nal·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for externality

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

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