Astronomical Unit (noun) Definition, Meaning & Examples

noun Astronomy.
  1. a unit of length, equal to the mean distance of the earth from the sun: approximately 93 million miles (150 million km). Abbreviation: AU
noun
  1. a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 10 11 metres or about 9.3 × 10 7 miles
    Astronomical Unit (noun) Definition, Meaning & Examples

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