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  1. Oxford American Dictionary

    purpurin

    • IPA[ˈpərp(y)ər(ə)n]

    美式

    • n.
      a red dye originally extracted from madder and also prepared artificially by the oxidation of alizarin.

    • noun: purpurin

    • 更多解釋

    purpurin

    • IPA[ˈpəːpjʊrɪn]

    英式

    • n.
      a red dye originally extracted from madder and also prepared artificially by the oxidation of ...

    Oxford Dictionary