Osmium and Os

Osmium noun - A hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known.

Os is a synonym for osmium. In some cases you can use "Os" instead a noun "Osmium".

Os noun - A hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known.

Osmium is a synonym for os. You can use "Osmium" instead a noun "Os".