This page provides all possible meanings and translations of the word au
Princeton's WordNetRate this definition:(0.00 / 0 votes)
gold, Au, atomic number 79(noun)
a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia
Astronomical Unit, AU(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)
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.au is the Internet country code top-level domain for Australia.