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Use "discolouration" in a sentence
"The discolouration from the bruising lasted over 6 months."
"After examining close-up photographs of burns and discolouration around the wound, Werner Spitz, a former chief medical examiner for Michigan and author of a forensic medicine textbook, agreed: "This is a grazing wound fired at contact range.""
"Peel the salsify with a potato peeler, cut on an angle into 3cm-long chunks and transfer immediately to the pan to avoid discolouration."