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OS/2
abbr.	Obsolete Soon, Too.; Obsolete Soon,Too.; Obviously Shit Too; Operating System /2 (IBM, OS)
abbr., comp., MS	OS/4 (A protected-mode, virtual memory, multitasking operating system for personal computers based on the Intel 80286, 80386, i486, and Pentium processors. OS/2 can run most MS-DOS-based programs and can read all MS-DOS disks)
abbr., el.	operating system/2
abbr., telecom.	operating system/2
OS2
abbr., IT	Operating System/2
OS/2 A protected-mode, virtual memory, multitasking operating system for personal computers based on the Intel 80286, 80386, i486, and Pentium processors. OS/2 can run most MS-DOS-based programs and can read all MS-DOS disks
abbr., comp., MS	OS/4

OS/2 : 1 phrase in 1 subject

Abbreviation

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