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1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   Application Binary Interface
   ABI
      <programming> (ABI) The interface by which an application
    program gains access to operating system and other
      services.  It should be possible to run the same compiled
      binary applications on any system with the right ABI.
      Examples are 88open's Binary Compatibility Standard, the
      PowerOpen Environment and Windows sockets.
      (1994-11-08)