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  1. unicursal

    • IPA[ˌjuːnɪˈkəːs(ə)l]

    英式

    • adj.
      relating to or denoting a curve or surface which is closed and can be drawn or swept out in a single movement.
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    • IPA[ˌyo͞onəˈkərsəl]

    美式

    • adj.
      relating to or denoting a curve or surface which is closed and can be drawn or swept out in a ...

    Oxford American Dictionary