Ir, n.
a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
<noun.substance>
Ir atomic number 77 iridium
semantic pointers
hypernym
Word
a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
<noun.substance>
Ir atomic number 77 iridium