Ruthenium (noun)

1. A chemical element of the platinum group, with the atomic number 44.
2. A silver-white metallic element, found in platinum ores and used in catalysts, electrical contacts, and alloys.

Origin:

Mid 19th century: modern latin, from ruthenia (the name of russia in medieval latin), + -ium.

Examples:

1. Ruthenium is a rare metal and is not found in large quantities in the earth's crust.
2. Ruthenium has a high melting point and is used in the production of high-temperature alloys.
3. Scientists are studying the potential uses of ruthenium in photovoltaic cells and cancer therapy.
4. Ruthenium has a unique electronic structure that makes it useful in various industrial applications.
5. The cost of ruthenium has increased significantly in recent years due to its growing demand in various industries.