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De - Pt| English Dictionary: cobalt ultramarine | by the DICT Development Group |
| 2 results for cobalt ultramarine | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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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. | |
