AU

Noun	1.	Au - 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 Synonyms: atomic number 79, gold
	2.	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) Synonyms: Astronomical Unit

1.	(networking)	au - The two character country code for Australia used in Internet domain names.
2.	(filename extension)	au - audio.

Access Unitatomic number 79, dental gold, gold, gold dust, gold foil, gold leaf, graphic tellurium, green gold, guinea gold, noble metal, sylvanite