vat dye
vat dye · vat dyes
Any of a class of dyes, many based on indigo, in which a soluble form is used to…Any of a class of dyes, many based on indigo, in which a soluble form is used to impregnate a fibre or fabric and is then converted to an insoluble form.
Meaning
1 sensesAny of a class of dyes, many based on indigo, in which a soluble form is used to impregnate a fibre or fabric and is then converted to an insoluble form.
a water-insoluble dye that is applied by reducing the dye to an alkaline form, applying the dye, then regenerating the insoluble dye by oxidation in the material; used for dyeing cotton