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Definition of molybdenum noun from the Oxford Advanced American Dictionary

 

molybdenum

 noun
noun
NAmE//məˈlɪbdənəm//
 
[uncountable] (symbol Mo)
 
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a chemical element. Molybdenum is a silver-grey metal that breaks easily and is used in some alloy steels.
See the Oxford Advanced Learner's Dictionary entry: molybdenum