From Longman Dictionary of Contemporary Englishmolybdenummo‧lyb‧de‧num /məˈlɪbdənəm/ noun [uncountable] HCMTIa hard silver-white metal that is used to make steel stronger. It is a chemical element: symbol Mo
Examples from the Corpus
molybdenum• Its minerals collection also houses gold, silver, titanium minerals, nickel and molybdenum.• The same source also mentioned excess molybdenum in soils which was affecting cattle in the area.• A similar argument applies to the 900 curies of molybdenum and its breakdown into technetium.• The molybdenum blue can be estimated in a spectrophotometer.• Tungsten, molybdenum, chromium and manganese, for instance, are used to harden steel.Origin molybdenum (1800-1900) Modern Latin Greek molybdaina, from molybdos “lead” 