AIT

from The Collaborative International Dictionary of English v.0.48

Ait \Ait\, n. [AS. ?, ?, perh. dim. of [imac]eg, [imac]g,
   island. See {Eyot}.]
   An islet, or little isle, in a river or lake; an eyot.
   [1913 Webster]

         The ait where the osiers grew.           --R. Hodges
                                                  (1649).
   [1913 Webster]

         Among green aits and meadows.            --Dickens.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Ait \Ait\, n.
   Oat. [Scot.] --Burns.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Eyot \Ey"ot\ ([imac]"[o^]t or [=a]t), n. [Ey (AS. [imac]g or
   Icel. ey) + F. dim. termination -ot; cf. AS. [imac]geo[eth].
   See {Island}, and cf. {Ait}.]
   A little island in a river or lake. See {Ait}. [Written also
   {ait}, {ayt}, {ey}, {eyet}, and {eyght}.] --Blackstone.
   [1913 Webster]

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

Advanced Intelligent Tape
AIT

   <storage> (AIT) A form of {magnetic tape} and drive using
   {AME} developed by {Sony} for storing large amounts of data.
   An AIT can store over 50 {gigabytes} and transfer data at six
   megabytes/second (in February 1999).  AIT features high speed
   file access, long head and media life, the {ALDC compression}
   {algorithm}, and a {MIC} chip.

   (http://aittape.com/).

   Seagate
   
(http://seagate.com/support/tape/scsiide/sidewinder/ait_main_page.shtml).

   (1999-04-16)

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

AIT
       Advanced Intelligent Tape (Sony, Streamer)

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

AIT
       Angewandte InformationsTechnik [verlags gmbh] (manufacturer)