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|Noun||1.||colouring material - any material used for its color; "she used a different color for the trim"|
paint, pigment - a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating; "artists use `paint' and `pigment' interchangeably"
material, stuff - the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to make bread"
indicator - (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
mordant - a substance used to treat leather or other materials before dyeing; aids in dyeing process
tincture - a substances that colors metals
hematochrome - a reddish coloring material found in some algae
pigment - dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
pigment - any substance whose presence in plant or animal tissues produces a characteristic color
stain - (microscopy) a dye or other coloring material that is used in microscopy to make structures visible