The word "discoloration" is correct and usable in written English.
You can use it to refer to any changes in the color of something. For example, "The discoloration of the sky indicated a storm was coming."
Printed felt base is formed by applying a heavy film of paint to felt saturated with asphalt; the felt is sealed at both the top and bottom with one or more layers of coating before application of paint, preventing discoloration from the paint and leveling the surface.
Various stable, modern resins are employed in place of oil paint to ease reversibility and to avoid discoloration.
These species, however, produce hemotoxins that cause mild to strong local effects, including edema, discoloration, and pain.
Swelling may occur, along with skin discoloration, numbness, and a tingling feeling.
Other symptoms of kwashiorkor include apathy, hair discoloration, and dry, peeling skin with sores that fail to heal.
Its wooden statue, the "Black Virgin" (which owes its name to the discoloration caused by the candles burned before it through the centuries), became a sacred object of European pilgrims from the 14th century.
Physical signs include deformity of the part, swelling in the region of the fracture, discoloration of the overlying skin, and abnormal mobility of the bone.
ANNALS OF MEDICINE about a case of nutritional skin-discoloration.
The connective tissue of the skin may rupture after stretching, even in healthy persons, forming purple linear discolorations.
Approximately 25 percent of the dogs that recover from infectious hepatitis develop temporary bluish white discolorations of one or both corneas of the eyes.
Most conservation treatments of prints and drawings or archives on paper aim to reduce the discolorations and acidity brought about by unfavourable climatic and storage conditions.
