Definition of indigo

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

Lern More About 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..
Isatis :: Isatis (n.) A genus of herbs, some species of which, especially the Isatis tinctoria, yield a blue dye similar to indigo; woad..
Anilic :: Anilic (a.) Pertaining to, or obtained from, anil; indigotic; -- applied to an acid formed by the action of nitric acid on indigo..
Diisatogen :: Diisatogen (n.) A red crystalline nitrogenous substance or artificial production, which by reduction passes directly to indigo..
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..
Indirubin :: Indirubin (n.) A substance isomeric with, and resembling, indigo blue, and accompanying it as a side product, in its artificial production..
Siderite :: Siderite (n.) An indigo-blue variety of quartz.
Indophenol :: Indophenol (n.) Any one of a series of artificial blue dyestuffs, resembling indigo in appearance, and obtained by the action of phenol on certain nitrogenous derivatives of quinone. Simple indophenol proper has not yet been isolated..
Indol :: Indol (n.) A white, crystalline substance, C8H7N, obtained from blue indigo, and almost all indigo derivatives, by a process of reduction. It is also formed from albuminous matter, together with skatol, by putrefaction, and by fusion with caustic potash, and is present in human excrement, as well as in the intestinal canal of some herbivora..
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..
Woad :: Woad (n.) A blue dyestuff, or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing..
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..
Indigogen :: Indigogen (n.) See Indigo white, under Indigo..
Indigoes :: Indigoes (pl. ) of Indig.
Indoaniline :: Indoaniline (n.) Any one of a series of artificial blue dyes, in appearance resembling indigo, for which they are often used as substitutes..
Indogen :: Indogen (n.) A complex, nitrogenous radical, C8H5NO, regarded as the essential nucleus of indigo..
Chemistry :: Chemistry (n.) An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo..
Indigo :: Indigo (n.) A kind of deep blue, one of the seven prismatic colors..
Marsdenia :: Marsdenia (n.) A genus of plants of the Milkweed family, mostly woody climbers with fragrant flowers, several species of which furnish valuable fiber, and one species (Marsdenia tinctoria) affords indigo..
Xylindein :: Xylindein (n.) A green or blue pigment produced by Peziza in certain kinds of decayed wood, as the beech, oak, birch, etc., and extracted as an amorphous powder resembling indigo..
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