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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Applications typically implement their own cryptographic protocols independent of the underlying operating system. Antonio Sanchez, Forbes.com, 18 June 2025 The smartphone will run Google's Android operating system. Arjun Kharpal, CNBC, 17 June 2025 Kela is currently developing a battlefield operating system enabling militaries to integrate AI and commercial tech. Alex Ritman, Variety, 14 June 2025 With a one-time payment of $14.97, this license provides full access to a future-ready operating system built for productivity and security. Stackcommerce Team, PC Magazine, 13 June 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 30 Jun. 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)

More from Merriam-Webster on operating system

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