Cobalt blue
Cobalt Co"balt (k[=o]"b[o^]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. [1913 Webster]

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. [1913 Webster]

2. A commercial name of a crude arsenic used as fly poison. [1913 Webster]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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  • Cobalt blue — This article is about the color. For other uses, see Cobalt blue (disambiguation). Cobalt blue is a cool, slightly desaturated blue color, historically made using cobalt salts of alumina. It is used in certain ceramics (historically, especially… …   Wikipedia

  • Cobalt Blue — Superherobox| caption=Cobalt Blue, Barry Allen s twin brother. Art by Pop Mhan and Chris Ivy. comic color=background:#8080ff character name=Cobalt Blue real name=Malcolm Thawne publisher=DC Comics debut=(As Cobalt Blue) Speed Force #1, (November… …   Wikipedia

  • cobalt blue — kobalto metaaliuminatas statusas T sritis chemija formulė CoAl₂O₄ atitikmenys: angl. azure blue; cobalt blue; cobalt methaaluminate; cobalt ultramarine; kingˊs blue; Thenard blue rus. кобальта метаалюминат; кобальтовая синь; синий кобальт;… …   Chemijos terminų aiškinamasis žodynas

  • cobalt blue — noun 1. a shade of blue tinged with green (Freq. 1) • Syn: ↑greenish blue, ↑aqua, ↑aquamarine, ↑turquoise, ↑peacock blue • Hypernyms: ↑blue, ↑blueness …   Useful english dictionary

  • cobalt blue — 1. a deep blue to a strong greenish blue color. 2. any of a number of pigments containing an oxide of cobalt. Also called king s blue, Thenard s blue. [1825 35] * * * …   Universalium

  • cobalt blue — co′balt blue′ n. 1) fia a blue to greenish blue color 2) chem. a pigment containing an oxide of cobalt • Etymology: 1825–35 …   From formal English to slang

  • cobalt blue — noun Date: 1835 1. a greenish blue pigment consisting essentially of cobalt oxide and alumina 2. a strong greenish blue …   New Collegiate Dictionary

  • cobalt blue — 1. noun a deep blue pigment derived from cobalt; zaffre 2. adjective The color of the pigment zaffre …   Wiktionary

  • cobalt blue — noun a deep blue pigment containing cobalt and aluminium oxides …   English new terms dictionary

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