Meaning of “operating system” in the English Dictionary

british dictionary

"operating system" in British English

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operating systemnoun [ C ]

uk /ˈɒp.ər.eɪ.tɪŋ ˌsɪs.təm/ us /ˈɑː.pə.reɪ.t̬ɪŋ ˌsɪs.təm/

a set of programs that control the way a computer system works, especially how its memory is used and how different programs work together

(Definition of “operating system” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"operating system" in American English

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operating systemnoun [ C ]

us /ˈɑp·əˌreɪ·t̬ɪŋ ˌsɪs·təm/ abbreviation OS

the set of programs that a computer uses to operate, store files, and communicate with devices and other computers

(Definition of “operating system” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"operating system" in Business English

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operating systemnoun [ C ]

uk us abbreviation OS, O/S IT

a program that controls the way a computer works, and that allows applications (= programs for particular purposes) to work on it:

a computer/PC operating system A leading economist denied that the firm has a monopoly in the PC operating system market.

(Definition of “operating system” from the Cambridge Business English Dictionary © Cambridge University Press)