Buna

Buna

[boo-nuh, byoo-]
Trademark.
a brand of synthetic rubber made by polymerizing or copolymerizing butadiene with another material, as acrylonitrile, styrene, or sodium.
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World English Dictionary
Buna (ˈbuːnə, ˈbjuː-)
 
n
trademark a synthetic rubber formed by polymerizing butadiene or by copolymerizing it with such compounds as acrylonitrile or styrene

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

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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