[mass noun]the chemical element of atomic number 42, a brittle silver-grey metal of the transition series, used in some alloy steels(Symbol: Mo) (化学元素)钼((符号:Mo)
A transition metal, molybdenum occurs chiefly in the ore molybdenite. The metal is used in steels to give strength and corrosion resistance, and molybdenum disulphide is used as a lubricant in engine oils
语源
early 19th cent.: modern Latin, earlier molybdena (originally denoting a salt of lead), from Greek molubdaina 'plummet', from molubdos 'lead'