COBALT • DICCIONARIO INGLES.COM • Definition of Cobalt

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/kˈoʊbˌɔlt/ 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.

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Etymology of 'Cobalt'

Collaborative International Dictionary of English 0.48

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"Cobalt" Quotes from Famous Books

... together with Loyalty Islands, Fortuna, and the New Hebrides group, have great wealth in the matter of resources. New Caledonia, a penal colony, has productive mines of chrome iron ore and copper. It is the source of a considerable supply of nickel and cobalt. A railway to the coast has been built for the carriage of ...

— Commercial Geography - A Book for High Schools, Commercial Courses, and Business Colleges • Jacques W. Redway

... write on either paper or vellum, so that the characters shall become visible only when subjected to the action of fire. Zaffre, digested in aqua regia, and diluted with four times its weight of water, is sometimes employed; a green tint results. The regulus of cobalt, dissolved in spirit of nitre, gives a red. These colors disappear at longer or shorter intervals after the material written upon cools, but again become apparent ...

— Selections From Poe • J. Montgomery Gambrill

... can say is that without warning or preparation I looked into a gulf seventeen hundred feet deep, with eagles and fish-hawks circling far below. And the sides of that gulf were one wild welter of color—crimson, emerald, cobalt, ochre, amber, honey splashed with port wine, snow white, vermilion, lemon, and silver gray in wide washes. The sides did not fall sheer, but were graven by time, and water, and air into monstrous heads of kings, dead chiefs—men and women of the old time. So far below that no sound of its strife ...

— American Notes • Rudyard Kipling

... miles distance, we joined the men who had been sent from the Maha village with our horses, and who brought us two deer. The bluffs or hills which reach the river at this place, on the south, contain allum, copperas, cobalt which had the appearance of soft isinglass, pyrites, and sandstone, the two first very pure. Above this bluff comes in a small creek on the south, which we call Rologe creek. Seven miles above is another cliff, on the same side, of allum rock, of a dark brown ...

— History of the Expedition under the Command of Captains Lewis and Clark, Vol. I. • Meriwether Lewis and William Clark

... until all the hands were exposed. He wrinkled his face in painful efforts of concentration, protruded a thick and unsavory tongue. At the loose corners of Jake's mouth flecks of saliva gathered whitely; in the fleering light of the kerosene the shadows on his face were cobalt. The woman's face shone with drops of perspiration that formed slowly and rolled like a flash ...

— Mountain Blood - A Novel • Joseph Hergesheimer

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