Noun
the act of changing the natural color of something by making it duller or dingier or unnatural or faded
a soiled or discolored appearance
Source: WordNetthe wine left a dark stain Source: Internet
As with any water repair, once water service is restored it is important to run your cold water tap until the water runs clear, if you find any discolouration. Source: Internet
Charig et al. reported a discolouration: a dark band between two layers of limestone – they say it is the product of sedimentation. Source: Internet
Then to get rid of any discolouration and uneven skin tone, Bushra uses NAKED’s Peach Colour Correcting Fluid. Source: Internet
Cyanotic heart diseases are marked by varying degrees of cyanosis, which is a bluish discolouration of lips and nail beds. Source: Internet
Cis van Vuure (2005) says that, although the colour is present in a variety of primitive cattle breeds, it is probably a discolouration that appeared after domestication. Source: Internet