Ferric (adjective)

Relating to or containing iron in the trivalent state (Fe3+).

Origin:

From the latin word ferrum, meaning "iron".

Examples:

1. Ferric ions are responsible for the red color of rust.
2. Ferric compounds are used in the production of iron and steel.
3. Ferric oxide is the compound that gives rust its characteristic red color.
4. Ferric chloride is used as a coagulant in water and wastewater treatment.
5. Ferric ions play an important role in many biological processes, including oxygen transport.