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  1. Oxford Dictionary

    diameter

    • IPA[dʌɪˈamɪtə]

    英式

    • n.
      a straight line passing from side to side through the centre of a body or figure, especially a circle or sphere.；a transverse measurement of something; width or thickness.

    • noun: diameter, plural noun: diameters

    • 釋義

    名詞

    • 1. a straight line passing from side to side through the centre of a body or figure, especially a circle or sphere.
    • ▪ a transverse measurement of something; width or thickness.
    • 2. a unit of linear measurement of magnifying power.