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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After wiping out the databases and event logs, the brothers reinstalled the operating systems on their corporate laptops with the help of an unnamed co-conspirator. Nate Anderson, ArsTechnica, 12 May 2026 Later, Microsoft sold licenses of its Windows operating system to device makers, cementing its role in information technology. Ashley Capoot,jordan Novet, CNBC, 11 May 2026 No, not the operating system that powers your Apple devices. Allen Buchanan, Oc Register, 9 May 2026 The mobile app is compatible with both iOS and Android operating systems. Maryna Holovnova, New Atlas, 8 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 13 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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