Source : Free On-Line Dictionary of Computing

time-sharing
     
         (Or "timesharing") An {operating system}
        feature allowing several users to run several tasks
        concurrently on one processor, or in parallel on many
        processors, usually providing each user with his own terminal
        for input and output.  {time-sharing} is {multitasking} for
        multiple users.
     
        (1998-04-24)