WordNet (r) 3.0 (2006):

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

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

AIX
       Advanced Interactive eXecutive (IBM, Unix, OS)


The Free On-line Dictionary of Computing (30 December 2018):

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)