Definition of indium in English:


Line breaks: in¦dium
Pronunciation: /ˈɪndɪəm


[mass 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)
    More example sentences
    • These elements include mercury, bromine, cadmium, indium, thallium, lead, and bismuth.
    • Their catalyst is a solid solution of zinc sulfide, copper indium sulfide, and silver indium sulfide.
    • Lead alloyed with tin, bismuth, cadmium, indium, or other elements, either alone or in combination, forms alloys with particularly low melting points.


mid 19th century: from indigo (because there are two characteristic indigo lines in its spectrum) + -ium.

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