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Definitions

operating system

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


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its Basic programming language and DOS operating system weren’t innovative in the market—but became standards.

From Barron's • Mar. 13, 2026

As it scales its business-to-business operating system, Zalando also said its software unit Scayle expanded in the U.S. and secured a partnership with jeans-maker Levi Strauss.

From The Wall Street Journal • Mar. 12, 2026

The case claims the shop built into the PlayStation's operating system was designed to make players a "captive class".

From BBC • Mar. 10, 2026

On top of the 699-euro phone, Punkt requires a 10-euro monthly subscription after one year of use, which the company says covers the costs of the operating system.

From Barron's • Mar. 4, 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