Cadmium

Part of speech: noun

Pronunciation: /ˈkædmiəm/

Definitions

1. A chemical element with the symbol Cd that is used in batteries and pigments, known for its toxic properties and potential environmental hazards
2. This element, primarily utilized in various industrial applications, poses health risks and environmental concerns due to its toxicity
3. An element classified as a transition metal, it finds applications in electronics but is also recognized for being harmful to human health and ecosystems

Etymology: Cadmium was discovered in 1817 by the German chemist Friedrich Stromeyer, who found it as an impurity in zinc carbonate. The metal's name, though, comes from a much older substance. Ancient Greek "Kadmeía" was the name for calamine, a mineral mixture that contained cadmium and was used to make brass, and the term was traced back to the mythical king Kadmos, the legendary founder of Thebes. German chemists then borrowed the name as "Cadmium" for the new element, and English followed suit. The chain runs from a legendary Greek king to a mineral used in metalwork, and then to a metal that was identified only in the nineteenth century. The mineral was named long before anyone knew it contained a distinct element, so the word preceded the discovery by centuries. The element's chemical symbol, Cd, reflects the same name.