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.