There are 2 definitions of Au in English:

Au1

Syllabification: Au

symbol

The chemical element gold.

Origin

from Latin aurum.

Definition of Au in:

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected

There are 2 definitions of Au in English:

AU2

Syllabification: AU

abbreviation

1Ångström unit(s).
1.1 (also a.u.) Astronomical unit(s).

Definition of Au in: