The word 'discolouration' is correct and can be used in written English
You can use it to refer to the process or result of something losing its colour or becoming discoloured. For example, "The discolouration of the leaves suggested there was a problem with the soil's mineral content".
5 Store in the fridge for up to 6 months (don't worry about any discolouration over time).
Nicknamed "the bathtub ring", this discolouration comes from minerals that were once deposited on the volcanic rock by the Colorado River and have become visible as its level has dropped.
Each flaw creates a tiny discolouration, imperceptible to the naked eye, in pictures taken by the camera.
His team is developing software to automate the mapping and matching of discolouration patterns.Software can generally sniff out amateur retouchers, says Dr Rocha, but professional forgeries continue to slip through.
Anti-microbial textiles reduce body odour and its attendant textile discolouration.
They may have noticed, as have photographic analysts outside the country, that Jang's cheek appears to be bruised and that there is discolouration around his wrists.
Trapped inside the harbour, its skin discolouration showed it was being bleached by a lack of salt water.
The vast congregation ebbed and flowed just beneath the waves, seemingly indifferent to the currents running from the Bay into the Gulf of Mexico, forming a fluid brown discolouration between the two arms of St Andrews State Park.
The haemoglobin in red blood cells is broken down, and these by-products give a dark yellow, brown or purple discolouration depending on the volume of blood and colour of the overlying skin.
If the pattern of unusual discolourations in two pictures taken by the same camera matches exactly, neither image has been retouched, at least in those areas.
As always, he bore minimal evidence of the war he had won (only the small lumps and discolourations around the eyes were conspicuous), but he said he hurt everywhere, and each pain was echoed by a tribute to the unique opponent who had inflicted it.
