vat dye

vat dye

n. A dye, such as indigo, that produces a fast color by impregnating fiber with a reduced soluble form that is then oxidized to an insoluble form.

---

vat′-dyed′ adj.

vat dye

n (Dyeing) a dye, such as indigo, that is applied by first reducing it to its leuco base, which is soluble in alkali, and then regenerating the insoluble dye by oxidation in the fibres of the material ˈvat-ˌdyed adj

vat′ dye`

n. any of a class of water-insoluble dyes that are taken up by textile fibers and then fixed by oxidation. [1900–05]

Thesaurus

Noun

1.

vat dye - 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 cottonvat colordye, dyestuff - a usually soluble substance for staining or coloring e.g. fabrics or hair