noun
- a hard, lustrous, silver-gray metallic chemical element used in alloys and to produce a deep blue pigment
- a deep blue color
Examples
- Cobalt is used to make strong magnets and heat-resistant alloys.
- The artist mixed cobalt with white paint to create a lighter blue shade.
- Cobalt mining is an important industry in several African countries.
- The vase was painted in a brilliant cobalt that caught the light beautifully.
- Rechargeable batteries often contain cobalt as a key component.
- The cobalt sky stretched endlessly above the desert landscape.