Osmium (noun)

1. A rare, dense, metallic element with the atomic number 76, used in alloys and as a catalyst.
2. A chemical element with the symbol Os and atomic number 76, it is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores.

Origin:

The word "osmium" is derived from the greek word "osme" which means "smell" because of its strong and unpleasant odor when heated.

Examples:

1. Osmium is the densest naturally occurring element.
2. The osmium is used to produce very hard alloys.
3. The osmium tipped pen was used to write on the toughest surfaces.
4. Osmium is a chemical element with the symbol Os and atomic number 76.
5. Osmium is a very rare element and is mostly found in platinum ores.