Nigraniline \Ni*gran"i*line\ (? or ?), n. [L. niger black + E. aniline.] (Chem.) The complex, nitrogenous, organic base and dyestuff called also {aniline black}. [1913 Webster]
Induline \In"du*line\, n. [Perh. fr. indigo.] (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}. Indult