Cobalt yellow
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:

  • cobalt yellow — noun 1. : a bright yellow pigment consisting essentially of potassium cobaltinitrite called also aureolin 2. : a strong to brilliant yellow called also aureolin * * * 1. aureolin. 2. Also called cobalt potassium nitrite. See potassium… …   Useful english dictionary

  • cobalt yellow — kobalto geltonasis statusas T sritis chemija apibrėžtis Pigmentas. formulė K₃[Co(NO₂)₆] atitikmenys: angl. cobalt yellow rus. кобальтовый желтый …   Chemijos terminų aiškinamasis žodynas

  • cobalt yellow — 1. aureolin. 2. Also called cobalt potassium nitrite. See potassium cobaltinitrite. [1870 75] * * * …   Universalium

  • 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 Collaborative International Dictionary of English

  • Cobalt bloom — 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,… …   The Collaborative International Dictionary of English

  • 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,… …   The Collaborative International Dictionary of English

  • Cobalt crust — 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,… …   The Collaborative International Dictionary of English

  • Cobalt glance — 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,… …   The Collaborative International Dictionary of English

  • Cobalt green — 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,… …   The Collaborative International Dictionary of English

  • cobalt ultramarine — 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,… …   The Collaborative International Dictionary of English

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