Iridosmium

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Iridosmine \Ir`i*dos"mine\, Iridosmium \Ir`i*dos"mi*um\, n.
     [Iridium + osmium.] (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.
     [1913 Webster]