From The Free On-line Dictionary of Computing (19 January 2023): Time Sharing Option TSO <operating system> (TSO) System software from IBM that provides time-sharing on an IBM mainframe running in an MVS environment. (2003-08-15)
Time Sharing Option TSO
<operating system> (TSO) System software from IBM that provides time-sharing on an IBM mainframe running in an MVS environment.
(2003-08-15)
