pig·men·ta·tion /ˌpɪgmənˈteʃən, ˌmɛn-/
  染色,著色,色素之形成
  pig·men·ta·tion /ˌpɪgmənˈteʃən, ˌmɛn-/ 名詞
  色素沉著,著色(作用)
  Pig·men·ta·tion n. Physiol. A deposition, esp. an excessive deposition, of coloring matter; as, pigmentation of the liver.
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  pigmentation
       n 1: the deposition of pigment in animals or plants or human
            beings
       2: coloration of living tissues by pigment [ant: depigmentation]