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 Definitions of astronomical unit  [ˌæs trəˈnɒm ɪ kəl]  

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Definition of 'astronomical unit' Random House Webster's College Dictionary 

1. (n.) astronomical unit
a unit of length, equal to the mean distance of the earth from the sun: approximately 93 million miles (150 million km).

Etymology:  (1900–05)

Definition of 'astronomical unit' Princeton's WordNet 

1. (noun) Astronomical Unit, AU
a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)

'astronomical unit' - Nearby Entries  

astronomic  astronomical  astronomical telescope  astronomical unit  astronomical year  astronomically  astronomy  



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