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Phenicine :: Phenicine (n.) A purple powder precipitated when a sulphuric solution of indigo is diluted with water.

Siderite :: Siderite (n.) An indigo-blue variety of quartz.

Urrhodin :: Urrhodin (n.) Indigo red, a product of the decomposition, or oxidation, of indican. It is sometimes found in the sediment of pathological urines. It is soluble in ether or alcohol, giving the solution a beautiful red color. Also called indigrubin..

Indigometer :: Indigometer (n.) An instrument for ascertaining the strength of an indigo solution, as in volumetric analysis..

Synthesis :: Synthesis (n.) The art or process of making a compound by putting the ingredients together, as contrasted with analysis; thus, water is made by synthesis from hydrogen and oxygen; hence, specifically, the building up of complex compounds by special reactions, whereby their component radicals are so grouped that the resulting substances are identical in every respect with the natural articles when such occur; thus, artificial alcohol, urea, indigo blue, alizarin, etc., are made by synthesis..

Orpiment :: Orpiment (n.) Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing..

Indin :: Indin (n.) A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol..

Indoin :: Indoin (n.) A substance resembling indigo blue, obtained artificially from certain isatogen compounds..

Ceroon :: Ceroon (n.) A bale or package. covered with hide, or with wood bound with hide; as, a ceroon of indigo, cochineal, etc..

Violaniline :: Violaniline (n.) A dyestuff of the induline group, made from aniline, and used as a substitute for indigo in dyeing wool and silk a violet-blue or a gray-blue color..

Indoaniline :: Indoaniline (n.) Any one of a series of artificial blue dyes, in appearance resembling indigo, for which they are often used as substitutes..

Indigo :: Indigo (a.) Having the color of, pertaining to, or derived from, indigo..

Sulphine :: Sulphindigotic (a.) Of, pertaining to, or designating, a sulphonic acid obtained, as a blue solution, by dissolving indigo in sulphuric acid; -- formerly called also cerulic sulphuric acid, but properly called indigo-disulphonic acid..

Indolin :: Indolin (n.) A dark resinous substance, polymeric with indol, and obtained by the reduction of indigo white..

Indigo :: Indigo (n.) A kind of deep blue, one of the seven prismatic colors..

Isatogen :: Isatogen (n.) A complex nitrogenous radical, C8H4NO2, regarded as the essential residue of a series of compounds, related to isatin, which easily pass by reduction to indigo blue..

Anil :: Anil (n.) A West Indian plant (Indigofera anil), one of the original sources of indigo; also, the indigo dye..

Lazulite :: Lazulite (n.) A mineral of a light indigo-blue color, occurring in small masses, or in monoclinic crystals; blue spar. It is a hydrous phosphate of alumina and magnesia..

Indican :: Indican (n.) An indigo-forming substance, found in urine, and other animal fluids, and convertible into red and blue indigo (urrhodin and uroglaucin). Chemically, it is indoxyl sulphate of potash, C8H6NSO4K, and is derived from the indol formed in the alimentary canal. Called also uroxanthin..

Indigo :: Indigo (n.) A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, Isatis tinctoria, Indigofera tinctoria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican..

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