aac

from The Free On-line Dictionary of Computing (8 July 2008)

Advanced Audio Coding
AAC

   <audio> (AAC) A successor to {MP3}, allowing lower {bit rates}
   and more stable quality.

   See {MPEG-2 AAC Low Profile} and {MPEG-4 AAC Main Profile}.

   (2001-12-02)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

AAC
       Authorization and Access Control (IETF)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

AAC
       Advanced Audio Coding (IIS, MPEG, AT&T, Dolby, Sony, ...)

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