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Definition of barium noun from the Oxford Advanced Learner's Dictionary

barium

noun
 
/ˈbeəriəm/
 
/ˈberiəm/
[uncountable]
(symbol Ba)
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  1. a chemical element. Barium is a soft silver-white metal
    Word Originearly 19th cent.: from baryta, barium hydroxide + -ium.
See barium in the Oxford Advanced American Dictionary
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trait
noun
 
 
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