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carbon black

noun
1.
any of various finely divided forms of amorphous carbon prepared by the partial combustion of hydrocarbons, as of natural gas, or by charring wood, bones, or other plant or animal tissues: used in pigments, as reinforcing agents in the manufacture of rubber products, and as clarifying or filtering agents.
Origin
1885-1890
1885-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for carbon black

carbon black

noun
1.
a black finely divided form of amorphous carbon produced by incomplete combustion of natural gas or petroleum: used to reinforce rubber and in the manufacture of pigments and ink
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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Encyclopedia Article for carbon black

any of a group of intensely black, finely divided forms of amorphous carbon, usually obtained as soot from partial combustion of hydrocarbons, used principally as reinforcing agents in automobile tires and other rubber products but also as extremely black pigments of high hiding power in printing ink, paint, and carbon paper. Carbon black is also used in protective coatings, plastics, and resistors for electronic circuits. As a reinforcing filler it greatly increases resistance to wear and abrasion. About one fourth of the weight of a standard automobile tire is carbon black. For tires on vehicles on which it is necessary to avoid building up an electrostatic charge, such as oil trucks and hospital operating carts, even more carbon black is added to make the rubber electrically conducting.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Word Value for carbon

10
13
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