.(每日一词）pigment

pigment /ˈpɪɡ.mənt/ n. 色素；颜料

meaning: a substance that gives something a particular color when it is present in it or is added to it. 

1) 词根：pig- 等同于pict- 描绘（picture)  (pict—pig-) 

2) 后缀：-ment 名词后缀(movement 移动)

e.g. Pigment is mixed into oil, glue, egg, etc. to make different types of paint. 将颜料与油、胶水、鸡蛋等混合，制成各种涂料。