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Fuchsine :: Fuchsine (n.) Aniline red; an artificial coal-tar dyestuff, of a metallic green color superficially, resembling cantharides, but when dissolved forming a brilliant dark red. It consists of a hydrochloride or acetate of rosaniline. See Rosaniline..

Helianthin :: Helianthin (n.) An artificial, orange dyestuff, analogous to tropaolin, and like it used as an indicator in alkalimetry; -- called also methyl orange..

Corallin :: Corallin (n.) A yellow coal-tar dyestuff which probably consists chiefly of rosolic acid. See Aurin, and Rosolic acid under Rosolic..

Xanthorhamnin :: Xanthorhamnin (n.) A glucoside extracted from Persian berries as a yellow crystalline powder, used as a dyestuff..

Erythrosin :: Erythrosin (n.) A red dyestuff obtained from fluorescein by the action of iodine.

Dye :: Dye (v. t.) To stain; to color; to give a new and permanent color to, as by the application of dyestuffs..

Eosin :: Eosin (n.) A yellow or brownish red dyestuff obtained by the action of bromine on fluorescein, and named from the fine rose-red which it imparts to silk. It is also used for making a fine red ink. Its solution is fluorescent..

Flavaniline :: Flavaniline (n.) A yellow, crystalline, organic dyestuff, C16H14N2, of artifical production. It is a strong base, and is a complex derivative of aniline and quinoline..

Roccellin :: Roccellin (n.) A red dyestuff, used as a substitute for cochineal, archil, etc. It consists of the sodium salt of a complex azo derivative of naphtol..

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 It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing..

Nigrosine :: Nigrosine (n.) A dark blue dyestuff, of the induline group; -- called also azodiphenyl blue..

Rosolic :: Rosolic (a.) Pertaining to, or designating, a complex red dyestuff (called rosolic acid) which is analogous to rosaniline and aurin. It is produced by oxidizing a mixture of phenol and cresol, as a dark red amorphous mass, C20H16O3, which forms weak salts with bases, and stable ones with acids. Called also methyl aurin, and, formerly, corallin..

Chay Root :: Chay root () The root of the Oldenlandia umbellata, native in India, which yieds a durable red dyestuff..

Luteolin :: Luteolin (n.) A yellow dyestuff obtained from the foliage of the dyer's broom (Reseda luteola).

Thionine :: Thionine (n.) An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet..

Safflower :: Safflower (n.) A dyestuff from these flowers. See Safranin (b).

Chrysaurin :: Chrysaurin (n.) An orange-colored dyestuff, of artificial production..

Cochineal :: Cochineal () A dyestuff consisting of the dried bodies of females of the Coccus cacti, an insect native in Mexico, Central America, etc., and found on several species of cactus, esp. Opuntia cochinellifera..

Crocetin :: Crocetin (n.) A dyestuff, obtained from the Chinese crocin, which produces a brilliant yellow..

Tropaeolin :: Tropaeolin (n.) A name given to any one of a series of orange-red dyestuffs produced artificially from certain complex sulphonic acid derivatives of azo and diazo hydrocarbons of the aromatic series; -- so called because of the general resemblance to the shades of nasturtium (Tropaeolum).

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