auPronunciation: (ō), [key]
—pl. auxPronunciation: (ō). [key]
to the; at the; with the. Cf. à la.
angstrom unit. Also,a.u.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
- au (Thesaurus)
- au (Encyclopedia)