AU

See also: Appendix:Variations of "au"
U+3373, ㍳
SQUARE AU

[U+3372]
CJK Compatibility
[U+3374]

Translingual

Symbol

AU

  1. (international standards) ISO 3166-1 alpha-2 country code for Australia.
    Synonym: AUS (alpha-3)
Usage notes

The code includes the Ashmore and Cartier Islands and the Coral Sea Islands.

Symbol

AU

  1. astronomical unit
Usage notes

Though "AU" is in frequent use by professional bodies and the public, the unit symbol au is recommended by the IAU and ua by the BIPM.

Synonyms
  • au (IAU recommended unit symbol for astronomical units)
  • ua (BIPM recommended unit symbol for astronomical units)
  • (Unicode glyph for astronomical unit)

Anagrams

English

Alternative forms

Adjective

AU (not comparable)

  1. (numismatics) Initialism of almost uncirculated.

Translations

Noun

AU (countable and uncountable, plural AUs)

  1. (medicine, dermatology) Initialism of alopecia universalis.
  2. (astronomy) Initialism of astronomical unit.
    • 2008, BioWare, Mass Effect, Redwood City: Electronic Arts, →ISBN, →OCLC, PC, scene: Tuntau:
      Tuntau is an enormous, low-density terrestrial planet, with a thick atmosphere of methane and helium. Despite being nearly 20 AU from Phoenix, the star's great heat and the insulating thickness of the atmosphere make the surface surprisingly temperate.
  3. Initialism of angstrom unit.
  4. (fandom slang) Initialism of alternate universe.
  5. Initialism of arbitrary unit.

Proper noun

AU

  1. Initialism of African Union.

Anagrams

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