This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Alternative spelling of discoloration.

n. the act of changing the natural color of something by making it duller or dingier or unnatural or faded

n. a soiled or discolored appearance

"Peel the salsify with a potato peeler, cut on an angle into 3cm-long chunks and transfer immediately to the pan to avoid discolouration."

change of color   

discoloration   

click-clack    heartwood    whippersnapper    cicatrice    hydro