Source : Free On-Line Dictionary of Computing

BSD/OS
     
         {BSDI}'s commercial version of {Berkeley
        Standard Distribution} {Unix}.  BSD/OS is a
        {POSIX}-compatible, {Unix}-like system for the {80386}, {486},
        and {Pentium}.  It is based on the {BSD} software from {UCB},
        a number of other sources, and components engineered by BSDI.
        The initial production release of BSD/OS shipped in March,
        1993.
     
        (1996-01-13)