au

Noun
  1. 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 (synset 114662977)
  2. 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) (synset 113678862)

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