( n. )
A complex nitrogenous radical, C8H4NO2, regarded as the essential residue of a series of compounds, related to isatin, which easily pass by reduction to indigo blue.
( n. )
A complex nitrogenous radical, C8H4NO2, regarded as the essential residue of a series of compounds, related to isatin, which easily pass by reduction to indigo blue.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012