termium
Termium is a term used to refer to a specific type of metallic compound or alloy. It is most commonly associated with the chemical element terbium. In many contexts, "termium" might be used informally to describe materials containing a significant amount of terbium. Terbium itself is a rare earth metal belonging to the lanthanide series. It is known for its unique luminescent properties, which make it valuable in various technological applications.
Materials referred to as termium can be alloys of terbium with other metals, or compounds where terbium