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 addition to being outfitted with powerful components, reliable connectivity and the most user-friendly operating system in the industry, this is one of the few options to fully support wireless connections with both Android Auto and Apple CarPlay. Bestreviews, Mercury News, 9 Apr. 2026 Apart from its serial nature and arc, the new season/series doesn’t do anything new, doesn’t attempt to update its year 2000 operating system to 2026 standards. Television Critic, Los Angeles Times, 9 Apr. 2026 Anthropic’s researchers say Mythos Preview was able to detect thousands of high- and critical-severity bugs and software defects, with vulnerabilities identified in most major operating systems and web browsers. Kevin Collier, NBC news, 8 Apr. 2026 If the consumer chatbot morphs into an operating system that connects users’ entire digital lives in one place, OpenAI could compete with Apple and Google to become the next tech giant. Reed Albergotti, semafor.com, 8 Apr. 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 15 Apr. 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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