ir·i·des·cent /-sṇt/
  (a.)彩虹色的,閃光的
  ir·i·des·cent /ˌɪrəˈdɛsṇt/ 形容詞
  暈色的,虹色的,虹彩的
  Ir·i·des·cent a.  Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic; as, iridescent glass.  See iridescence.
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  iridescent
       adj 1: varying in color when seen in different lights or from
              different angles; "changeable taffeta"; "chatoyant (or
              shot) silk"; "a dragonfly hovered, vibrating and
              iridescent" [syn: changeable, chatoyant, shot]
       2: having a play of lustrous rainbow-like colors; "an
          iridescent oil slick"; "nacreous (or pearlescent) clouds
          looking like mother-of-pearl"; "a milky opalescent (or
          opaline) luster" [syn: nacreous, opalescent, opaline,
           pearlescent]