What does AUX stand for?

American River Recreation Co., Rancho Cordova, CA - Manufacturer code for watercraft hull identification number (USCG)

Apple UNIX - Computer science

Araguaina - Brazil - Airport symbol (OAG)

Aura - Language code (ETLW)

Auxiliary (AFM)

Auxiliary Apple Unix (SAUS)

Auxiliary Verb (ADWA)

(First Serial Port) (SAUS)

Auxiliary (WDMC)

Auxiliary (DIAR)

Auxiliary Light - Navigation signal

Fitted with Auxiliary Engine (MARI)