WordNet (r) 3.0 (2006):

Aix
    n 1: wood duck and mandarin duck [syn: Aix, genus Aix]

The Free On-line Dictionary of Computing (19 January 2023):

Advanced Interactive eXecutive
AIX

    (AIX) IBM's version of Unix, taken as
   the basis for the OSF standard.

   Usenet newsgroup: news:comp.sys.unix.aix.

   (1994-11-24)