| Main Entry: | operating system |
| Part of Speech: | noun |
| Definition: | computer software for basic operation |
Synonyms: |
DOS, MS-DOS, MacOS, OS, OS/2, UNIX, Windows, disk operating system, executive, system software, systems program |
| Main Entry: | systems program |
| Part of Speech: | noun |
| Definition: | system software |
Synonyms: |
I/O routine, OS, command-line interpreter, disk operating system, memory-management routine, operating system, task scheduling, user interface |
| Main Entry: | disk operating system |
| Part of Speech: | noun |
| Definition: | computer operating system |
Synonyms: |
DOS, OS, operating system, system software |