DICT.TW Dictionary Taiwan

 ir·id·os·mine /ˌɪrəˈdɑzˌmin/
 銥鋨合金; 銥鋨礦

 Ir·i·dos·mine Ir·i·dos·mi·um n.  Min. The native compound of iridium and osmium. It is found in flattened metallic grains of extreme hardness, and is often used for pointing gold pens.
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 iridosmine
      n : a hard and corrosion resistant mineral that is a natural
          alloy of osmium and iridium (usually containing small
          amounts of rhodium and platinum); used in needles and pen
          nibs etc. [syn: osmiridium]