isatin
n. (வேதி) அவுரி நீலத்தை உயிரகமூட்டுவதனால் கிடைக்கும் செந்நிற மணி உருப்பொருள்.
I"sa*tin, n. Etym: [See Isatis.] (Chem.) Defn: 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. [Written also, less properly, isatine.]