Iridium - Definition
iridium
n 1: a heavy brittle metallic element of the platinum group;
used in alloys; occurs in natural alloys with platinum or
osmium [syn: iridium, Ir, atomic number 77]
n 1: a heavy brittle metallic element of the platinum group;
used in alloys; occurs in natural alloys with platinum or
osmium [syn: iridium, Ir, atomic number 77]