HyperDic: au

English > 2 senses of the word Au / AU:
NOUNsubstanceAu, gold, atomic number 79a soft yellow malleable ductile (trivalent and univalent) metallic element
quantityAU, Astronomical Unita unit of length used for distances within the solar system
Au / AU > pronunciation
Soundsow'
English > Au: 2 senses > noun 1, substance
MeaningA 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.
Synonymsgold, atomic number 79
Narrower24-karat gold, pure gold100 per cent gold
gold dustThe particles and flakes (and sometimes small nuggets) of gold obtained in placer mining
green goldA gold alloy (at least 14 karat gold with silver or silver and cadmium) that has a green appearance
guinea gold22-karat gold from which guinea coins were made
Broadernoble metalAny metal that is resistant to corrosion or oxidation
Substance ofdental goldAn alloy of gold used in dentistry
goldcoins made of gold
gold foilfoil made of gold
gold leafA very thin form of gold foil
sylvanite, graphic telluriumA silver-white mineral consisting of silver gold telluride
Spanishnúmero atómico 79, oro
Catalannúmero atòmic 79, or
English > AU: 2 senses > noun 2, quantity
MeaningA 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).
SynonymAstronomical Unit
Broaderastronomy unitA linear unit used for astronomical distances
SpanishUA, unidad astronómica
CatalanUA, unitat astronòmica

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