decolourizing
1decolourizing — decolourize (Amer.) de col·our·ize || raiz v. deprive of color; discolorize, remove color (also decolourise) …
2copper — copper1 /kop euhr/, n. 1. a malleable, ductile, metallic element having a characteristic reddish brown color: used in large quantities as an electrical conductor and in the manufacture of alloys, as brass and bronze. Symbol: Cu; at. wt.: 63.54;… …
3Venetian glass — ornamental glassware of the type made at Venice, esp. that from the island of Murano. [1835 45] * * * Variety of glassware made in Venice from the 13th century to the present. In the 15th century efforts were concentrated on the perfection of… …
