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Noun: vat dye  vat dI
  1. 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
    - vat color [US], vat colour [Brit, Cdn]

Type of: dye, dyestuff

Encyclopedia: Vat dye