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Cobalt blue   /kˈoʊbˌɔlt blu/   Listen
noun
Cobalt  n.  
1.
(Chem.) A tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co. Note: It occurs in nature in combination with arsenic, sulphur, and oxygen, and is obtained from its ores, smaltite, cobaltite, asbolite, etc. Its oxide colors glass or any flux, as borax, a fine blue, and is used in the manufacture of smalt. It is frequently associated with nickel, and both are characteristic ingredients of meteoric iron.
2.
A commercial name of a crude arsenic used as fly poison.
Cobalt bloom. Same as Erythrite.
Cobalt blue, a dark blue pigment consisting of some salt of cobalt, as the phosphate, ignited with alumina; called also cobalt ultramarine, and Thenard's blue.
Cobalt crust, earthy arseniate of cobalt.
Cobalt glance. (Min.) See Cobaltite.
Cobalt green, a pigment consisting essentially of the oxides of cobalt and zinc; called also Rinman's green.
Cobalt yellow (Chem.), a yellow crystalline powder, regarded as a double nitrite of cobalt and potassium.





Collaborative International Dictionary of English 0.48


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"Cobalt blue" Quotes from Famous Books



... icebergs were charging down upon us with the receding tide and dressing up in compact phalanx when the tide arose. First would come the advance guard of smaller bergs, with here and there a house-like mass of cobalt blue with streaks of white and deeper recesses of ultra-marine; here we passed an eight-sided, solid figure of bottle-green ice; there towered an antlered formation like the horns of a stag. Now we must use all caution and give the larger icebergs a wide berth. They ...
— Alaska Days with John Muir • Samual Hall Young
... cottage-built tenements, covered with the creeping vine. In the centre, the presidio, or government-house; on one side the graceful spire of a church, on the other the massive walls of a convent. Above all, is a sky of the deepest cobalt blue, richly contrasting with the dark green of the tall pines, and the uncertain and indescribable tints on the horizon of ...
— Monsieur Violet • Frederick Marryat
... back the door and Kitty stepped out upon a Laristan runner of rose hues and cobalt blue. She wondered what it cost Cutty to keep up an establishment like this. There were fourteen rooms, seven facing the north and seven facing the west, with glorious vistas of steam-wreathed roofs and brick Matterhorns and the dim horizon touching the sea. Fine ...
— The Drums Of Jeopardy • Harold MacGrath


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