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General Science


  • noun a rare precious metal traded on bullion markets

Cars & Driving

  • noun a light-grey, heavy, ductile, noble metal; atomic number 78, atomic weight 195.09; melting point at 1769°C; main member of the so-called platinum metals; together with other platinum metals, is used as a catalyst in automotive exhaust converters


  • A dense and lustrous silvery-white metallic chemical element whose atomic number is 78. It is chemically inactive, extremely corrosion resistant, malleable, ductile, and can absorb large amounts of hydrogen. It has around 35 known isotopes, of which 5 are stable. Its applications in electronics include its use in contacts, electrodes, thermocouples, and in electroplating. Its chemical symbol is Pt.
  • chemical symbolPt