discoloration

名词 discoloration:

1. a soiled or discolored appearance
   同义词：stain, discolouration
2. the act of changing the natural color of something by making it duller or dingier or unnatural or faded
   同义词：discolouration

dis.col.or.a.tion

n.（名词）

The act of discoloring.
变色；褪色：变色的过程
The condition of being discolored.
已变色（褪色）的状态
A discolored spot, smudge, or area; a stain.
变色点，污渍，污处；污迹