| Main Entry: | |
| 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 |
| Main Entry: | computer science |
| Part of Speech: | noun |
| Definition: | the study of computers |
| Synonyms: | artificial intelligence, computer technology, computer-aided learning, computer-aided testing, cybernetics, data processing, information retrieval, information technology, natural language processing, neural networks, operating systems, programming, programming languages, robotics, simulation, systems analysis |