One of the mysteries of the English language finally explained.
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
- ‘Most farmers are adding selenium, copper, zinc and iodine to their water supply.’
- ‘The most common trace element deficiencies in cattle are copper, selenium, iodine and cobalt.’
- ‘Lead, selenium, tellurium and sulfur are added to copper alloys to improve machinability.’
- ‘Duration of clinical mastitis was reduced in the cows supplemented with both vitamin E and selenium.’
- ‘While writing this story she added selenium and chromium to her supplement regimen.’
- ‘Glutathione peroxidase is an antioxidant enzyme containing both selenium and glutathione.’
- ‘Recently, selenium and tellurium have been added as important impurities.’
- ‘Vitamin C does not work on its own - it needs vitamin E, selenium, and many other micronutrients all working together.’
- ‘Severely malnourished children are often deficient in vitamin A, zinc, iron, folic acid, copper, and selenium.’
- ‘Zinc and selenium are essential elements that are used by enzymes in your body.’
- ‘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.’
- ‘Many studies have shown that supplemental selenium has cancer-preventive properties.’
- ‘The Pasminco operation produces lead, zinc, cadmium, selenium, copper sulphate and sulphuric acid.’
- ‘Meat is also a decent source of nutrients such as vitamin A, vitamin B12, folate, selenium and zinc.’
- ‘Colloidal elemental selenium and metal selenides are not available to plants.’
- ‘Vegan diets can be low in iodine and selenium, but this depends on the soil in which the plants are grown.’
- ‘Sesame and sunflower seeds are rich in selenium, vitamin E, calcium and zinc.’
- ‘There is no homeostatic control mechanism for selenium absorption and selenium is highly absorbable.’
- ‘The organic form of selenium has been found to be more effective than sodium selenite for reproducing animals.’
Early 19th century: modern Latin, from Greek selēnē ‘moon’.
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