| Au The symbol for the element gold. [From Latin aurum, gold.] |
| AU abbr. astronomical unit |
au
(Electronics & Computer Science / Computer Science)
the Internet domain name for Australia
Au
the chemical symbol for
(Chemistry / Elements & Compounds) gold
[from New Latin aurum]
AU
abbreviation for
1. (Placename) African Union
2. (Physics / General Physics) Also a.u. angstrom unit
3. (Astronomy) Also a.u. astronomical unit
| Au The symbol for gold. |
| AU Abbreviation of astronomical unit |
ThesaurusLegend: Synonyms Related Words Antonyms
| 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 regiagold foil - foil made of gold gold leaf - a very thin form of gold foil gold - coins made of gold noble metal - any metal that is resistant to corrosion or oxidation 24-karat gold, pure gold - 100 per cent gold gold dust - the particles and flakes (and sometimes small nuggets) of gold obtained in placer mining dental gold - an alloy of gold used in dentistry green gold - a gold alloy (at least 14 karat gold with silver or silver and cadmium) that has a green appearance guinea gold - 22-karat gold from which guinea coins were made graphic tellurium, sylvanite - a silver-white mineral consisting of silver gold telluride; a source of gold in Australia and America |
| 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) astronomy unit - a linear unit used for astronomical distances |
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