SINCE 1828
Au
abbreviation (1)Definition of Au
(Entry 1 of 3)
author
Au
symbolDefinition of Au (Entry 2 of 3)
gold
AU
abbreviation (2)Definition of AU (Entry 3 of 3)
1
angstrom unit
2
astronomical unit
3
[ Latin aures unitas ]
both ears
—used especially in audiology and in writing prescriptions
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