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 os·mi·um /ˈɑzmiəm/
 鋨

 os·mi·um /ˈɑzmɪəm/ 名詞
 鋨

 os·mi·um n.  Chem. A rare metallic element of the platinum group with atomic number 76.  It is found native as an alloy in platinum ore, and in iridosmine.  It is a hard, infusible, bluish or grayish white metal, and the heaviest substance known.  Its tetroxide is used in histological experiments to stain tissues. Symbol Os.  Atomic weight 190.2.  Specific gravity 22.477.
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 osmium
      n : a hard brittle blue-gray or blue-black metallic element that
          is one of the platinum metals; the heaviest metal known
          [syn: Os, atomic number 76]

 osmium
 Symbol: Os
 Atomic number: 76
 Atomic weight: 190.2
 Hard blue-white metallic transition element. Found with platinum and used
 in some alloys with platinum and iridium.