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Showing results for operating system.
Definitions

operating system

[op-uh-rey-ting sis-tuhm] / ˈɒp ə reɪ tɪŋ ˌsɪs təm /
NOUN
computer software for basic operation
Synonyms
WEAK
MS-DOS MacOS OS OS/2 UNIX Windows disk operating system dos executive system software systems program

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.

This is because the latest version of iOS introduces age checks for UK iPhone users, as well as for iPads running on up-to-date iterations of its own operating system, iPadOS.

From BBC • May 5, 2026

After the acquisition in 2010, many engineers moved over to RIM to build a mobile operating system for the BlackBerry.

From The Wall Street Journal • May 2, 2026

Roku makes streaming devices and licenses its operating system to TV makers.

From Barron's • May 1, 2026

In his view, “fully controlling both the operating system and hardware” would allow OpenAI to deliver this type of product.

From MarketWatch • Apr. 27, 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