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Definition of barium noun from the Oxford Advanced American Dictionary

 

barium

 noun
noun
NAmE//ˈbɛriəm//
 
, NAmE//ˈbæriəm//
 
[uncountable] (symbol Ba)
 
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a chemical element. Barium is a soft silver-white metal.
See the Oxford Advanced Learner's Dictionary entry: barium

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