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renewable

[ri-noo, -nyoo] /rɪˈnu, -ˈnyu/
adjective
1.
able to be renewed:
a library book that is not renewable.
noun
2.
something that is renewable.
Origin
1720-1730
1720-30; renew + -able
Related forms
renewability, noun
nonrenewable, adjective
unrenewable, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for renewables

renewables

plural noun
1.
sources of alternative energy, such as wind and wave power
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 renewables

renewable

adj.

1727, from renew + -able. In reference to energy sources, attested by 1971.

Online Etymology Dictionary, © 2010 Douglas Harper
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renewables in Science
renewable
  (rĭ-n'ə-bəl)   
Relating to a natural resource, such as solar energy, water, or wood, that is never used up or that can be replaced by new growth. Resources that are dependent on regrowth can sometimes be depleted beyond the point of renewability, as when the deforestation of land leads to desertification or when a commercially valuable species is harvested to extinction. Pollution can also make a renewable resource such as water unusable in a particular location. Compare nonrenewable.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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