pigment
1. pig.ment \'pig-m*nt\ \-m*n-.ter-e-\ n [L pigmentum, fr. pingere to paint - more at PAINT] 1: a substance that imparts black or white or a color to other materials; (Xesp : a powdered substance mixed with a liquid in which it is relatively insoluble to impart color 2a: a coloring matter in animals and plants esp. in a cell or tissue 2b: any of various related colorless substances - pig.men.tary aj 2. pig.ment \-m*nt, -.ment\ vt : to color with or as if with pigment