rhenium Syllabification: (rhe·ni·um)Pronunciation: /ˈrēnēəm/Definition of rhenium noun the chemical element of atomic number 75, a rare silvery-white metal that occurs in trace amounts in ores of molybdenum and other metals. (Symbol: Re)Origin: 1920s: modern Latin, from Rhenus, the Latin name of the river Rhinerhenium in other Oxford dictionaries Definition of rhenium in the British & World English dictionary
