Buna

[boo-nuh, byoo-]

Trademark.

a brand of synthetic rubber made by polymerizing or copolymerizing butadiene with another material, as acrylonitrile, styrene, or sodium.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for buna

They appear to have confidence that they will have justice under the Buna Ranee.
A Soldier's Experience or A Voice from the Ranks: Showing the Cost of War in Blood and Treasure|Timothy Gowing
As soon as the coins are struck, we shall divide the profits, wish one another 'buna nopte!'
The Poor Plutocrats|Maurus Jkai

British Dictionary definitions for buna

Buna

noun

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

Word Origin and History for buna

buna

synthetic rubber made from butadiene, from German Buna, from first elements of butadiene, name of a hydrocarbon (related to butane; the suffix indicates the presence of two double bonds) + Na, indicating sodium (from natrium; see sodium).