indium Syllabification: (in·di·um)Pronunciation: /ˈindēəm/Definition of indium noun the chemical element of atomic number 49, a soft silvery-white metal occurring naturally in association with zinc and some other metals. (Symbol: In)Origin: mid 19th century: from indigo (because there are two characteristic indigo lines in its spectrum) + -iumindium in other Oxford dictionaries Definition of indium in the British & World English dictionary
