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See also: aau and A.A.U.




  1. (international standards, aviation) IATA airport code for Asau Airport, which serves Asau, Savaiʻi, Samoa.



AAU (plural AAUs)

  1. (law, climate change) Initialism of assigned amount unit.
    • 2014, John G Sprankling, “Rights in Airspace and Outer Space”, in The International Law of Property, Oxford University Press, →ISBN, page 174:
      The standard allowance, an “assigned amount unit” (AAU), is equivalent to one metric ton of carbon dioxide emissions. [] In general, these credits can be purchased, sold, and otherwise transferred by private actors through international markets. Unlike AAUs, they are not allocated by a state but rather are generated through voluntary activities undertaken most commonly by private actors.

Proper noun[edit]


  1. (US, sports) Initialism of Amateur Athletic Union; also A.A.U.[1][2]


  1. ^ Lesley Brown, editor-in-chief; William R. Trumble and Angus Stevenson, editors (2002), “AAU”, in The Shorter Oxford English Dictionary on Historical Principles, 5th edition, Oxford; New York, N.Y.: Oxford University Press, →ISBN, page 2.
  2. ^ Christine A. Lindberg, editor (2002), “AAU”, in The Oxford College Dictionary, 2nd edition, New York, N.Y.: Spark Publishing, →ISBN, page 1.