noun, plural externalities.
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.

1665–75; external + -ity

nonexternality, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To externality
World English Dictionary
externality (ˌɛkstɜːˈnælɪtɪ)
n , pl -ties
1.  the state or condition of being external
2.  something external
3.  philosophy the quality of existing independently of a perceiving mind
4.  an economic effect that results from an economic choice but is not reflected in market prices

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
It is perhaps the strongest instance of his externality.
Well, guess what, our society has accepted that externality in our
  transportation system.
Externality costs for coal are a large undefined risk.
The authors also note the potential for a positive externality.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature