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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The indole derivative 1H-indole-2,3-dione, used in the synthesis of dyes.

from the GNU version of the Collaborative International Dictionary of English

  • n. An orange-red crystalline substance, C8H5NO2, obtained by the oxidation of indigo blue. It is also produced from certain derivatives of benzoic acid, and is one important source of artificial indigo.

from The Century Dictionary and Cyclopedia

  • n. A compound (C8H5NO2) obtained by oxidizing indigo.


Sorry, no etymologies found.


  • Isatis I. indigotica or I. tinctoria, also known as da qing ye in Traditional Chinese Medicine, contains indican and isatin B among other compounds and is known to have potent antibacterial properties against staphylococci, pneumococci, and meningococci, which means that it is useful for virtually all common bacterial infections.



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