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  1. Oxford American Dictionary

    convex

    • IPA[ˌkänˈveks]

    美式

    • adj.
      having an outline or surface curved like the exterior of a circle or sphere；(of a polygon) having only interior angles measuring less than 180°.
    • 釋義

    形容詞

    • 1. having an outline or surface curved like the exterior of a circle or sphere a convex lens
    • 2. (of a polygon) having only interior angles measuring less than 180°.