Definition of selenium in English:

selenium

(also Se)

noun

mass noun
  • The chemical element of atomic number 34, a grey crystalline non-metal with semiconducting properties.

    Selenium occurs mainly as a minor constituent of metallic sulphide ores. The grey crystalline form is a semiconductor showing strong photoconductivity. Selenium is used in rectifiers and photoelectric cells, and for colouring glass and ceramics

    • ‘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.’
    • ‘The most common trace element deficiencies in cattle are copper, selenium, iodine and cobalt.’
    • ‘Sesame and sunflower seeds are rich in selenium, vitamin E, calcium and zinc.’
    • ‘The organic form of selenium has been found to be more effective than sodium selenite for reproducing animals.’
    • ‘There is no homeostatic control mechanism for selenium absorption and selenium is highly absorbable.’
    • ‘Recently, selenium and tellurium have been added as important impurities.’
    • ‘While writing this story she added selenium and chromium to her supplement regimen.’
    • ‘Colloidal elemental selenium and metal selenides are not available to plants.’
    • ‘Duration of clinical mastitis was reduced in the cows supplemented with both vitamin E and selenium.’
    • ‘Glutathione peroxidase is an antioxidant enzyme containing both selenium and glutathione.’
    • ‘Vitamin C does not work on its own - it needs vitamin E, selenium, and many other micronutrients all working together.’
    • ‘In an associated consideration, mercury in the body tends to quell or cripple selenium in enzymes.’
    • ‘Many species of plants have the ability to absorb metals such as zinc, selenium and nickel from the soil and to concentrate them in their tissues.’
    • ‘Most farmers are adding selenium, copper, zinc and iodine to their water supply.’
    • ‘Severely malnourished children are often deficient in vitamin A, zinc, iron, folic acid, copper, and selenium.’
    • ‘Meat is also a decent source of nutrients such as vitamin A, vitamin B12, folate, selenium and zinc.’
    • ‘Zinc and selenium are essential elements that are used by enzymes in your body.’
    • ‘Vegan diets can be low in iodine and selenium, but this depends on the soil in which the plants are grown.’

Origin

Early 19th century modern Latin, from Greek selēnē ‘moon’.

Pronunciation

selenium

/sɪˈliːnɪəm/