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

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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.
The company has also taken stakes in AI startups including video generation company Luma AI and developed its own HUMAIN laptop and computer operating system. — Matthew Martin, semafor.com, 3 Sep. 2026 The latter will comprise search and advertising, Xbox, and revenue from sales of devices and Windows operating system licenses to device makers. — Jordan Novet, CNBC, 2 Sep. 2026 Keep software and devices updated Keep your operating system, browser, apps and router updated. — Kurt Knutsson, FOXNews.com, 1 Sep. 2026 The Partial Implementation Trap The Toyota Production System (TPS) worked when organizations treated it as an integrated operating system rather than a collection of tools. — Joseph Byrum, Forbes.com, 1 Sep. 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

Rhymes for operating system

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Browse Nearby Words

operating room
operating system
operating table
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Cite this Entry

“Operating system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/operating%20system. Accessed 4 Sep. 2026.

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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)

More from Merriam-Webster on operating system

Britannica.com: Encyclopedia article about operating system

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