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astronomical unit

astronomical unit

mean distance between Earth and the Sun, common length reference in astronomy

en-GB/ˌæstɹəˈnɒmɪkl ˈjuːnɪt/

en-US/ˌæstɹəˈnɑmɪkəl ˈjunət/

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unit of length non-SI unit mentioned in and accepted with the SI