from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of a series of blue, bluish-red and black dyestuffs, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any one of a large series of aniline dyes, colored blue or violet, and represented by aniline violet.
  • n. A dark green amorphous dyestuff, produced by the oxidation of aniline in the presence of copper or vanadium salts; -- called also aniline black.

from The Century Dictionary and Cyclopedia

  • n. A name of various coaltar colors used in dyeing.


Perhaps from indigo. (Wiktionary)


  • The discovery of induline, one of the modifications of aniline black, was made known in 1864.

    Forty Centuries of Ink


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