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cobalt blue
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English Dictionary: cobalt blue by the DICT Development Group
2 results for cobalt blue
From WordNet (r) 3.0 (2006) [wn]:
cobalt blue
n
  1. a shade of blue tinged with green [syn: greenish blue, aqua, aquamarine, turquoise, cobalt blue, peacock blue]
  2. greenish-blue pigment consisting essentially of cobalt oxide and alumina
    Synonym(s): cobalt blue, cobalt ultramarine
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Cobalt \Co"balt\ (k[omac]"b[ocr]lt; 277, 74), n. [G. kobalt,
      prob. fr. kobold, kobel, goblin, MHG. kobolt; perh. akin to
      G. koben pigsty, hut, AS. cofa room, cofgodas household gods,
      Icel. kofi hut. If so, the ending -old stands for older
      -walt, -wald, being the same as -ald in E. herald and the
      word would mean ruler or governor in a house, house spirit,
      the metal being so called by miners, because it was poisonous
      and troublesome. Cf. {Kobold}, {Cove}, {Goblin}.]
      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.
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