• (n.) A white, crystalline, nitrogenous substance obtained by the reduction of isatin. It is a member of the indol series; -- hence its name.
Di`ox·in'dol noun [ Prefix di- + ox ygen + indol .] (Chemistry) A white, crystalline, nitrogenous substance obtained by the reduction of isatin. It is a member of the indol series; -- hence its name.