NOUN | quantity | Astronomical Unit, AU | a unit of length used for distances within the solar system |
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Meaning | 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). | |
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Synonym | AU | |
Broader | astronomy unit | A linear unit used for astronomical distances |
Spanish | UA, unidad astronómica | |
Catalan | UA, unitat astronòmica |
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