noun
: an acid azo dye made by coupling diazotized sulfanilic acid with beta-naphthol and used chiefly in dyeing wool and leather, in making pigments (as for wallpaper), and as a biological stain — see dye table I (under Acid Orange 7)
noun
: an acid azo dye made by coupling diazotized sulfanilic acid with beta-naphthol and used chiefly in dyeing wool and leather, in making pigments (as for wallpaper), and as a biological stain — see dye table I (under Acid Orange 7)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012