(ˌdiːælˈbeɪʃən) n1. the process of bleaching or making white2. (Metallurgy) the process of whitening metal or giving it a burnished and gleaming finish, esp coins
dealbation
enUK
de·al·ba·tion
(dē'al-bā'shŭn), The act of whitening, bleaching, or blanching. [L. de-albo, pp. -atus, to whiten]