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unvulcanized

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vul⋅can⋅ize

[vuhl-kuh-nahyz]
–verb (used with object), -ized, -iz⋅ing.
1. to treat (rubber) with sulfur and heat, thereby imparting strength, greater elasticity, durability, etc.
2. to subject (a substance other than rubber) to some analogous process, as to harden it.
Also, especially British, vul⋅can⋅ise.


Origin:
1820–30; Vulcan + -ize


vul⋅can⋅iz⋅a⋅ble, adjective
vul⋅can⋅i⋅za⋅tion, noun
vul⋅can⋅iz⋅er, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

vulcanize 
1827, "to put into flames," from Vulcan (q.v.), name of the Roman god of fire, + -ize. As a treatment for rubber, first recorded 1846.
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
vulcanize   (vŭl'kə-nīz')  Pronunciation Key 
To harden rubber by combining it with sulfur or other substances in the presence of heat and pressure. Vulcanization gives rubber strength, resistance, and elasticity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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