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  1. Oxford Dictionary

    octagon

    • IPA[ˈɒktəɡ(ə)n]

    英式

    • n.
      a plane figure with eight straight sides and eight angles.；an object or building with an octagonal plan or cross section.

    • noun: octagon, plural noun: octagons

    • 更多解釋

    octagon

    • IPA[ˈäktəˌɡän]

    美式

    • n.
      a plane figure with eight straight sides and eight angles.

    Oxford American Dictionary