Definition that contains platinum metal
- os a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
- osmium a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
- atomic number 76 a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known