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Definitions

operating system

[op-uh-ray-ting sis-tuhm] / ˈɒp ə reɪ tɪŋ ˌsɪs təm /


Example Sentences

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However, in May, it said it would be making the site available again for some UK Apple users who had confirmed their age with the company's most up-to-date version of iOS, its mobile operating system.

From BBC ● Sep. 23, 2026

Another promises access to system information, contacts and location data on devices running Apple’s iOS mobile operating system.

From The Wall Street Journal ● Sep. 16, 2026

Erased like an old operating system via update, Apple officially said goodbye to Tim Cook as CEO this week.

From MarketWatch ● Sep. 4, 2026

Although NeXT’s presence in popular culture was overshadowed by Apple, the DNA of its operating system, NEXTSTEP, became the foundation for Apple’s products, from Macs to iPhones.

From The Wall Street Journal ● Aug. 19, 2026

The first version of the Windows operating system launched in 1985, and the breakthrough version that made IBM PCs much more user-friendly—Windows 3.0—shipped on May 22, 1990, only six months after the wall went down.

From "The World Is Flat" by Thomas L. Friedman


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