operating system

noun

: software that controls the operation of a computer and directs the processing of programs (as by assigning storage space in memory and controlling input and output functions)

Examples of operating system in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Microsoft invented the operating system before memorably blowing mobile. Liz Hoffman, semafor.com, 14 Oct. 2025 Under this model described by the Tesla chief, xAI would define the operating system, reference designs and product requirements, while specialist outsource to third parties to build physical products, much like Apple’s business model. Alex Harrington, MSNBC Newsweek, 13 Oct. 2025 Two years before, Google was fined $177 million for allegedly blocking customized versions of its Android operating system. David Zimmermann, The Washington Examiner, 11 Oct. 2025 Speaking of sharing, Internxt offers desktop and mobile apps compatible with various operating systems, including Windows, macOS, Linux, and browsers. PC Magazine, 11 Oct. 2025 See All Example Sentences for operating system

Word History

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of operating system was in 1961

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Cite this Entry

“Operating system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/operating%20system. Accessed 16 Oct. 2025.

Kids Definition

operating system

noun
: software that controls the operation of a computer and directs the processing of the user's programs (as by controlling input and output functions)

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