Definition of selenium in English:


Line breaks: sel¦en|ium
Pronunciation: /sɪˈliːnɪəm


[mass noun]
  • The chemical element of atomic number 34, a grey crystalline non-metal with semiconducting properties. (Symbol: Se)
    More example sentences
    • The Pasminco operation produces lead, zinc, cadmium, selenium, copper sulphate and sulphuric acid.
    • Many studies have shown that supplemental selenium has cancer-preventive properties.
    • Lead, selenium, tellurium and sulfur are added to copper alloys to improve machinability.



More example sentences
  • They are made from materials such as calcium fluoride, sapphire, AMTIR, silicon, zinc selenide, and germanium.
  • They separately synthesized rod-shaped nanometre scale crystal of two semi-conductors: cadmium selenide and cadmium telluride.
  • It also combines with a number of metals to form compounds known as selenides as, for example, magnesium selenide (MgSe).


early 19th century: modern Latin, from Greek selēnē 'moon'.

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grotesque quality or grotesque things collectively