cobalt
noun/ˈkəʊbɔːlt/
/ˈkəʊbɔːlt/
[uncountable]- (symbol Co)a chemical element. Cobalt is a hard silver-white metal, often mixed with other metals and used to give a deep blue-green colour to glass.Topics Physics and chemistryc2
- (also cobalt blue)a deep blue-green colourTopics Colours and Shapesc2More Like This Colour compoundsColour compounds
Word Originlate 17th cent.: from German Kobalt ‘imp, demon’ (from the belief that cobalt was harmful to the ores with which it occurred).
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cobalt