DYE PLANTS — The dye materials that were used in ancient times were many and varied and were obtained from various mineral, plant, and animal sources. The last gave fast and beautiful colors, but these were so costly that only the wealthy could afford them.… … Encyclopedia of Judaism
dye — n. & v. n. 1 a a substance used to change the colour of hair, fabric, wood, etc. b a colour produced by this. 2 (in full dyestuff) a substance yielding a dye, esp. for colouring materials in solution. v.tr. (dyeing) 1 impregnate with dye. 2 make… … Useful english dictionary
dye — Synonyms and related words: acid color, aniline, aniline dye, apply paint, artificial dye, bedaub, bedizen, begild, besmear, besprinkle, breathe, brew, brush on paint, calcimine, chromogen, coat, coat of paint, coating, color, color filter, color … Moby Thesaurus
Natural dye — Skeins of wool colored with natural plant dyes. Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots, berries, bark, leaves, and … Wikipedia
vat dye — noun 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 • Syn: ↑vat color • Hypernyms: ↑dye, ↑dyestuff * * *… … Useful english dictionary
reactive dye — ▪ chemistry any of a class of highly coloured organic substances, primarily used for tinting textiles, that attach themselves to their substrates by a chemical reaction that forms a covalent bond between the molecule of dye and that of the… … Universalium
Vat dye — Vat dyes are an ancient class of dyes, based on the natural dye, indigo, which is now produced synthetically. OverviewThe process vat dyeing refers to dyeing in a bucket or fat. It can be performed whenever a liquid, even shade over the entire… … Wikipedia
acid dye — noun dye in which the chromophore is part of a negative ion • Hypernyms: ↑dye, ↑dyestuff • Hyponyms: ↑metallized dye * * * noun or acid color : any of a large class of dyes that contain acidic groups (as sulfonic or ca … Useful english dictionary
Reactive dye — In a reactive dye a chromophore contains a substituent that is activated and allowed to directly react to the surface of the substrate. HistoryReactive dyes first appeared commercially in 1956, after their invention in 1954 by Rattee and Stephens … Wikipedia
basic dye — noun a dye that is considered to be a base because the chromophore is part of a positive ion • Syn: ↑basic color, ↑basic colour • Hypernyms: ↑dye, ↑dyestuff * * * noun or basic color … Useful english dictionary
