noun
: a water-soluble sodium salt of the sulfuric acid ester of the leuco compound of a vat dye that is applied to textiles and then oxidized in acid solution to the corresponding vat dye — compare dye table I
noun
: a water-soluble sodium salt of the sulfuric acid ester of the leuco compound of a vat dye that is applied to textiles and then oxidized in acid solution to the corresponding vat dye — compare dye table I
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012