Definition of operating system noun from the Oxford Advanced Learner's Dictionary

operating system

noun

/ˈɒpəreɪtɪŋ sɪstəm/

/ˈɑːpəreɪtɪŋ sɪstəm/

(abbreviation OS)

a set of programs that controls the way a computer works and runs other programs
- Which operating system do you use?
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See operating system in the Oxford Advanced American DictionarySee operating system in the Oxford Learner's Dictionary of Academic English

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