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au
has definitions from the fields of astronomy,chemistry
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[ noun ] (chemistry) 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 Related terms noble_metal green_gold guinea_gold gold_dust gold gold_leaf sylvanite dental_gold gold_foil |
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[ noun ] Last name, frequency rank in the U.S. is 11417
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[ noun ] (astronomy) 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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