Search Result for "discolouration": 
Wordnet 3.0

NOUN (2)

1. a soiled or discolored appearance;
- Example: "the wine left a dark stain"
[syn: stain, discoloration, discolouration]

2. the act of changing the natural color of something by making it duller or dingier or unnatural or faded;
[syn: discoloration, discolouration]



WordNet (r) 3.0 (2006):

discolouration
    n 1: a soiled or discolored appearance; "the wine left a dark
         stain" [syn: stain, discoloration, discolouration]
    2: the act of changing the natural color of something by making
       it duller or dingier or unnatural or faded [syn:
       discoloration, discolouration]