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Erythrite :: Erythrite (n.) A colorless crystalline substance, C4H6.(OH)4, of a sweet, cooling taste, extracted from certain lichens, and obtained by the decomposition of erythrin; -- called also erythrol, erythroglucin, erythromannite, pseudorcin, cobalt bloom, and under the name phycite obtained from the alga Protococcus vulgaris. It is a tetrabasic alcohol, corresponding to glycol and glycerin..

Roseo- :: Roseo- () A prefix (also used adjectively) signifying rose-red; specifically used to designate certain rose-red compounds (called roseo-cobaltic compounds) of cobalt with ammonia. Cf. Luteo-.

Vitriol :: Vitriol (n.) A sulphate of any one of certain metals, as copper, iron, zinc, cobalt. So called on account of the glassy appearance or luster..

Purpureo- :: Purpureo- () A combining form signifying of a purple or purple-red color. Specif. (Chem.), used in designating certain brilliant purple-red compounds of cobaltic chloride and ammonia, similar to the roseocobaltic compounds. See Cobaltic..

Luteocobaltic :: Luteocobaltic (a.) Pertaining to, or designating, certain compounds of cobalt having a yellow color. Cf. Cobaltic..

Roselite :: Roselite (n.) A hydrous arsenite of cobalt, occuring in small red crystals, allied to erythrite..

Speiss :: Speiss (n.) A regulus consisting essentially of nickel, obtained as a residue in fusing cobalt and nickel ores with silica and sodium carbonate to make smalt..

Cobalt :: Cobalt (n.) A commercial name of a crude arsenic used as fly poison.

Cobaltite :: Cobaltite (n.) A mineral of a nearly silver-white color, composed of arsenic, sulphur, and cobalt..

Glaucodot :: Glaucodot (n.) A metallic mineral having a grayish tin-white color, and containing cobalt and iron, with sulphur and arsenic..

Cobaltous :: Cobaltous (a.) Pertaining to, derived from, or containing, cobalt; -- said esp. of cobalt compounds in which the metal has its lower valence..

Bloom :: Bloom (n.) A popular term for a bright-hued variety of some minerals; as, the rose-red cobalt bloom..

Pyrites :: Pyrites (n.) A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color..

Cabrerite :: Cabrerite (n.) An apple-green mineral, a hydrous arseniate of nickel, cobalt, and magnesia; -- so named from the Sierra Cabrera, Spain..

Arsenic :: Arsenic (n.) One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356¡ Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of

Praseo- :: Praseo- () A combining form signifying green; as, praseocobalt, a green variety of cobalt..

Electro-magnet :: Electro-magnet (n.) A mass, usually of soft iron, but sometimes of some other magnetic metal, as nickel or cobalt, rendered temporarily magnetic by being placed within a coil of wire through which a current of electricity is passing. The metal is generally in the form of a bar, either straight, or bent into the shape of a horseshoe..

Zaffer :: Zaffer (n.) A pigment obtained, usually by roasting cobalt glance with sand or quartz, as a dark earthy powder. It consists of crude cobalt oxide, or of an impure cobalt arseniate. It is used in porcelain painting, and in enameling pottery, to produce a blue color, and is often confounded with smalt, from which, however, it is distinct, as it contains no potash. The name is often loosely applied to mixtures of zaffer proper with silica, or oxides of iron, manganese, etc..

Xantho- :: Xantho- () A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.

Cobaltic :: Cobaltic (a.) Pertaining to, derived from, or containing, cobalt; -- said especially of those compounds in which cobalt has higher valence; as, cobaltic oxide..

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