English dictionary
astronomical unit meaning and definition
Definition and meaning of astronomical unit at MeaningMonkey.org. astronomical unit meaning and definition in the English Dictionary.ASTRONOMICAL UNIT noun
Definition of Astronomical Unit (noun)
- 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)
- synonyms: AU
Source: Princeton University Wordnet