Selenium Definition

A nonmetallic chemical element with several allotropic forms, used in photoelectric devices because its electrical conductivity varies with the intensity of light: also used in rectifiers, in certain electrostatic copying processes, etc.: symbol, Se; at. no. 34
Webster's New World
  • atomic number 34
  • se

Origin of Selenium

  • A New Latin word derived by Swedish chemist Berzelius in 1818, from Ancient Greek Σελήνη (selēnē, "moon").

    From Wiktionary

  • Greek selēnē moon (from selas light, brightness) –ium

    From American Heritage Dictionary of the English Language, 5th Edition

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