Global Statements Dictionary
os
OS
(O' es') n.
1. operating system.
2. an IBM mainframe operating system, an early version of OS/390.
3. open source.
OS/2
(O' es' tOO') n.
an operating system published by IBM, developed for use on its PS/2 line of computers and other desktop computers, designed to have a high degree of compatibility with MS-DOS.
OS/390
(O' es' thrE' nIn' ti) n.
a mainframe operating system published by IBM, the predecessor of z/OS.
