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Au

adj, name, noun, slang

Definitions

Adjective
  1. 1
    Initialism of almost uncirculated. abbreviation, alt-of, initialism, not-comparable
Proper Noun
  1. 1
    Initialism of African Union. abbreviation, alt-of, initialism
  2. 2
    A language spoken in Sandaun Province, Papua New Guinea.
  3. 3
    A surname.
  4. 4
    Initialism of Age of Ultron. abbreviation, alt-of, initialism
Noun
  1. 1
    Abbreviation of atomic unit. abbreviation, alt-of
  2. 2
    A vowel found in Indic abugidas.
  3. 3
    Initialism of alopecia universalis. abbreviation, alt-of, countable, initialism, uncountable
  4. 4
    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) wordnet
  5. 5
    Abbreviation of arbitrary unit. abbreviation, alt-of
Show 8 more definitions
  1. 6
    Initialism of astronomical unit. abbreviation, alt-of, countable, initialism, uncountable

    "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."

  2. 7
    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 wordnet
  3. 8
    Abbreviation of astronomical unit. abbreviation, alt-of
  4. 9
    Initialism of angstrom unit. abbreviation, alt-of, countable, initialism, uncountable
  5. 10
    Abbreviation of Absorbance Units. abbreviation, alt-of
  6. 11
    Initialism of alternate universe /alternative universe. abbreviation, alt-of, countable, initialism, slang, uncountable
  7. 12
    Initialism of arbitrary unit. abbreviation, alt-of, countable, initialism, uncountable
  8. 13
    Initialism of animal unit. abbreviation, alt-of, countable, initialism, uncountable

Etymology

Borrowed from Cantonese 歐／欧 (ou1) or 區／区 (ou1) (Doublet of Ao), or from German Au.

See also for "au"

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