Abbreviation of atomic unit. / Abbreviation of arbitrary unit. / Abbreviation of astronomical unit. / Abbreviation of Absorbance Units.

Initialism of African Union.

(medicine, dermatology) Initialism of alopecia universalis. / (astronomy) Initialism of astronomical unit. / Initialism of angstrom unit. / (fandom slang) Initialism of alternate universe.

A language spoken in Sandaun Province, Papua New Guinea.

A surname.

Australian dollar

(astronomy) plural of AU (astronomical units)

Abbreviation of Australia.

plural of au pair

deep down, in the end