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sustainable

[suh-stey-nuh-buh l] /səˈsteɪ nə bəl/
adjective
1.
capable of being supported or upheld, as by having its weight borne from below.
2.
pertaining to a system that maintains its own viability by using techniques that allow for continual reuse:
sustainable agriculture. Aquaculture is a sustainable alternative to overfishing.
3.
able to be maintained or kept going, as an action or process:
a sustainable negotiation between the two countries.
4.
able to be confirmed or upheld:
a sustainable decision.
5.
able to be supported as with the basic necessities or sufficient funds:
a sustainable life.
Origin
Related forms
sustainability, noun
nonsustainable, adjective
nonsustainability, noun
unsustainable, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for nonsustainable

sustainable

/səˈsteɪnəbəl/
adjective
1.
capable of being sustained
2.
(of economic development, energy sources, etc) capable of being maintained at a steady level without exhausting natural resources or causing severe ecological damage: sustainable development
3.
(of economic growth) non-inflationary
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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Word Origin and History for nonsustainable

sustainable

adj.

1610s, "bearable," from sustain + -able. Attested from 1845 in the sense "defensible;" from 1965 with the meaning "capable of being continued at a certain level." Sustainable growth is recorded from 1965. Related: Sustainably.

Online Etymology Dictionary, © 2010 Douglas Harper
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