Iridium (noun)

A metallic chemical element with the atomic number 77 and symbol Ir.

Origin:

From the latin iris (rainbow) and -ium (element).

Examples:

1. Iridium is a rare and dense metal that is used in alloys, jewelry, and electrical contacts.
2. Iridium is often used as a catalyst in chemical reactions.
3. Iridium is a hard, brittle and corrosion-resistant metal that can withstand high temperatures.
4. Iridium is often used in scientific equipment and in the aerospace industry.
5. Iridium is a valuable precious metal and its price fluctuates with the market demand.