cobalt-blue

cobalt blue

noun
1.
a deep blue to a strong greenish-blue color.
2.
any of a number of pigments containing an oxide of cobalt.


Origin:
1825–35

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
cobalt blue
 
n
1.  Also called: Thénard's blue any greenish-blue pigment containing cobalt aluminate, usually made by heating cobaltous sulphate, aluminium oxide, and phosphoric acid together
2.  a.  a deep blue to greenish-blue colour
 b.  (as adjective): a cobalt-blue car

Collins English Dictionary - Complete & Unabridged 10th Edition
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Cobalt-blue is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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