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Definitions

OS

[os] / ɒs /
NOUN
disk operating system
Synonyms




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.

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Apple is also rolling out its latest Apple Intelligence updates through its iOS 27 and Mac OS 27 upgrades.

From MarketWatch ● Sep. 22, 2026

She is one of 21 drone pilots for the OS, in charge of collecting footage to track changes on the ground.

From Barron's ● Aug. 12, 2026

OS said it could not decide name changes.

From BBC ● May 13, 2026

It is an application running on Apple’s hardware, spending up to $135 billion this year to build consumer AI features that Apple now ships free, at the OS level, on every device it sells.

From The Wall Street Journal ● Mar. 15, 2026

"Right. Well, the thing is, Pathfinder has an OS update process. So we can change the software to anything we want."

From "The Martian" by Andy Weir


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