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Buna

[boo-nuh, byoo-] /ˈbu nə, ˈbyu-/
Trademark.
1.
a brand of synthetic rubber made by polymerizing or copolymerizing butadiene with another material, as acrylonitrile, styrene, or sodium.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for Buna

Buna

/ˈbuːnə; ˈbjuː-/
noun
1.
trademark a synthetic rubber formed by polymerizing butadiene or by copolymerizing it with such compounds as acrylonitrile or styrene
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 Buna
buna
synthetic rubber made from butadine, from Ger. Buna, from first elements of butadine + natrium.
Online Etymology Dictionary, © 2010 Douglas Harper
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