eco-

eco-

a combining form representing ecology, in the formation of compounds (ecosystem; ecotype ); also with the more general sense “environment,” “nature,” “natural habitat” (ecocide; ecolaw; ecopolitics ).
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Collins
World English Dictionary
eco-
 
combining form
denoting ecology or ecological: ecocide; ecosphere

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

eco-
compounding element abstracted from ecology, ecological; attested from 1969.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

eco- pref.
Ecology; ecological: ecosystem.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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