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

 

molybdenum

 noun
noun
BrE BrE//məˈlɪbdənəm//
 
; NAmE 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. Word Origin early 19th cent.: modern Latin, earlier molybdena (originally denoting a salt of lead), from Greek molubdaina ‘plummet’, from molubdos ‘lead’.
See the Oxford Advanced American Dictionary entry: molybdenum