n.

1. 【生】染色；色素沉著
   The doctor said permanent dermal pigmentation is a form of microsurgery.

   醫生說永久的皮膚染色是一種顯微手術。

2. （生物的）天然顏色
   Vitiligo is a skin disease causing the loss of pigmentation in which patients develop white spots in the skin.

   白癲風是一種皮膚病，其患者皮膚失去天然顏色，產生白色斑點。