# astronomical unit definition

• noun:
• A unit of length used in calculating astronomical distances in the solar system corresponding to the mean distance from Earth into sunshine, about 150 million kilometers (93 million kilometers).
• The mean length from the Earth to your sunlight (the semi-major axis of Earth's orbit), more or less 149,600,000 kilometres (representation AU), accustomed determine distances inside solar power system.
• a unit of size useful for distances inside the solar system; corresponding to the mean length between your world plus the sunlight (approximately 93 million kilometers or 150 million kilometers)
• A unit of length used in calculating astronomical distances inside the solar system corresponding to the mean distance from Earth towards sunshine, roughly 150 million kilometers (93 million miles).
• The mean length through the world to your Sun (the semi-major axis of world's orbit), approximately 149,600,000 kilometres (image AU), accustomed measure distances inside solar system.
• a unit of length employed for distances in the solar system; add up to the mean distance involving the Earth plus the sunlight (roughly 93 million miles or 150 million kilometers)

## Related Sources

• Definition for "astronomical unit"
• A unit of length used in calculating astronomical…
• Hypernym for "astronomical unit"
• astronomy unit