plural aux [oh] /oʊ/. French.

  1. to the; at the; with the.

  1. author.Also au
  2. Symbol, Chemistry. gold.

  1. astronomical unit.

  1. angstrom unit.

the internet domain name for

  1. Australia

the chemical symbol for

  1. gold

abbreviation for

  1. African Union
  2. Also: a.u. angstrom unit
  3. Also: a.u. astronomical unit

chemical symbol for “gold,” from Latin aurum “gold” (see aureate).

French, “at the, to the,” from Old French al, contraction of a le, with -l- softened to -u-, as also poudre from pulverem, chaud from calidus, etc. Used in many expressions in cookery, etc., which have crossed the Channel since 18c., e.g. au contraire, literally “on the contrary;” au gratin, literally “with scrapings;” au jus, literally “with the juice.”

  1. The symbol for the elementgold


  1. auris utraque (each ear)

  1. The symbol for gold.

  1. Abbreviation of astronomical unit


  1. A soft, shiny, yellow element that is the most malleable of all the metals. It occurs in veins and in alluvial deposits. Because it is very durable, resistant to corrosion, and a good conductor of heat and electricity, gold is used as a plated coating on electrical and mechanical components. It is also an international monetary standard and is used in jewelry and for decoration. Atomic number 79; atomic weight 196.967; melting point 1,063.0°C; boiling point 2,966.0°C; specific gravity 19.32; valence 1, 3. See Periodic Table. See Note at element.

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