operating system operating surgeon • operating table · · · Info · Definitions · Synonyms · Characters · · operating system · · Text Common · · Latin · · Scripts 16 · · Length 6 · · Syllables Definitions · · · (noun) (computer science) software that controls the execution of computer programs and may provide various services. Synonyms: operating system, OS. · · Noun Definition 1 Synonyms · · · os · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079