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
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In testing described by Anthropic and partner organizations, the system identified thousands of previously unknown software vulnerabilities across major operating systems, browsers and open-source projects, including flaws that had persisted in mature codebases for years. Aditya Vikram Kashyap, Forbes.com, 18 May 2026 The desktop operating system is built on the Android stack and offers a desktop experience that better supports Android apps and traditional computer things, like connected peripherals and windowing. Florence Ion, PC Magazine, 18 May 2026 Mattias Balk | Picture Alliance | Getty Images Bristol and Hengrui will each contribute assets and will work together on developing new drugs, making China look less like a source of one-off molecules and more like a part of pharma's global research and development operating system, Baran said. Angelica Peebles, CNBC, 15 May 2026 Daniel built the new operating system for Petaluma Creamery on Salesforce and its Agentforce AI platform. Nick Lichtenberg, Fortune, 15 May 2026 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 21 May. 2026.

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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