cobalt
/ˈkoʊbɔlt/
noun
- A hard, silver-gray metal that is used in making strong alloys and batteries, and also gives a deep blue color to glass and ceramics.
- Cobalt is a key component in the batteries of many electric cars.
- Artists have used cobalt to create vibrant blue pigments for centuries.
- The mining of cobalt raises concerns about environmental damage and worker safety.