Cite
 

Meaning of vat dye

vat' dye"

Pronunciation: [key]
— Chem. Chem.
  1. any of the class of insoluble dyes impregnated into textile fibers by reduction into soluble leuco bases that regenerate the insoluble dye on oxidation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.