AU
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See also: Appendix:Variations of "au"
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Translingual[edit]
Symbol[edit]
AU
- The ISO 3166-1 two-letter (alpha-2) code for Australia.
- astronomical unit
Usage notes[edit]
(astronomical unit): 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[edit]
(astronomical unit):
- au (the IAU recommended unit symbol for astronomical units)
- ua (the BIPM recommended unit symbol for astronomical units)
- ㍳ (Unicode glyph for astronomical unit)
Anagrams[edit]
English[edit]
Alternative forms[edit]
Noun[edit]
AU (plural AUs)
- (medicine, dermatology) Initialism of alopecia universalis.
- (astronomy) Initialism of astronomical unit.
- 2008, BioWare, Mass Effect, Redwood City: Electronic Arts, →ISBN, OCLC 246633669, 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.
- Initialism of angstrom unit.
- (fandom slang) Initialism of alternate universe.
- Initialism of arbitrary unit.
Proper noun[edit]
AU
- Initialism of African Union.