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English definition of “cobalt”

cobalt

noun [U] uk   /ˈkəʊ.bɒlt/ us    /ˈkoʊ.bɑːlt/ (symbol Co)

cobalt noun [U] (METAL)

a chemical element that is a hard silver-white metal, used in metal mixtures and for making materials blue

cobalt noun [U] (COLOUR)

(also cobalt blue) a deep blue or greenish-blue colour

cobalt

adjective uk   /ˈkəʊ.bɒlt/ us    /ˈkoʊ.bɑːlt/ (also cobalt blue)
having a deep blue or greenish-blue colour
(Definition of cobalt from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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