Ni·gran·i·line n. Chem. The complex, nitrogenous, organic base and dyestuff called also aniline black.
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In·du·line n. Chem. (a) Any one of a large series of aniline dyes, colored blue or violet, and represented by aniline violet. (b) A dark green amorphous dyestuff, produced by the oxidation of aniline in the presence of copper or vanadium salts; -- called also aniline black.
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