A substance used as coloring.
Dry coloring matter, usually an insoluble powder, to be mixed with water, oil, or another base to produce paint and similar products.
A substance, such as chlorophyll or melanin, that produces a characteristic color in plant or animal tissue.
pigmentary pig·men·tar·y (pĭg'mən-těr'ē) adj. Of or relating to a pigment.