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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.

Entrata says 2.5 million units are enrolled in its operating system, but the company offers a suite of property-management services beyond RentPlus, including payment processing and rental insurance.

From MarketWatch • Jun. 2, 2026

IBM’s own guidance suggested that 10% growth is likely the ceiling through 2026, largely due to slowing demand for its core product, the Red Hat Enterprise Linux operating system.

From Barron's • Jun. 1, 2026

This includes the little green robot that Google uses as the mascot for its Android mobile operating system.

From BBC • May 13, 2026

Palantir has become the operating system for the Defense Department.

From The Wall Street Journal • May 9, 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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