pigment Definition

a substance that imparts black or white or a color to other materials; especially : a powdered substance that is mixed with a liquid in which it is relatively insoluble and used especially to impart color to coating materials (such as paints) or to inks, plastics, and rubber

a coloring matter in animals and plants especially in a cell or tissue; also : any of various related colorless substances

to color with or as if with pigment

any of various permanently or intermittently colored conjugated proteins and especially hemoglobin that function in the transfer of oxygen in cellular respiration