Толковый словарь английского языка Oxford English Reference - selenium
Selenium
selenium
n. Chem. a non-metallic element occurring naturally in various metallic sulphide ores and characterized by the variation of its electrical resistivity with intensity of illumination. Usage Symb.: Se. Phrases and idioms selenium cell a piece of this used as a photoelectric device. Derivatives selenate n. selenic adj. selenious adj. Etymology: mod.L f. Gk selene moon + -IUM
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noun Etymology: New Latin, from Greek selēnē moon, from selas brightness Date: 1818 a photosensitive element that occurs in both crystalline and amorphous forms, is obtained chiefly as a by-product in copper refining, and is used especially in glass, semiconductor devices, and alloys ...Толковый словарь английского языка
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