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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
Google also runs popular web browser Chrome and a mobile operating system Android.
—Queenie Wong, Los Angeles Times, 21 Dec. 2024
The integration works on iPhone 16 series phones, iPhone 15 Pro models, iPads with A17 Pro or M1 chips and later, and Macs with M1 processors or newer, running their respective latest operating systems.
—Ars Technica, 20 Dec. 2024
The typical solution in a case like this is to burn a bootable rescue disc that runs a non-Windows operating system.
—PCMAG, 17 Dec. 2024
After winning a major antitrust lawsuit against Google this summer, the Department of Justice proposed a series of remedies last month, including the divestiture of Google’s Chrome browser and potentially its Android operating system.
—Ryan Nabil, National Review, 27 Dec. 2024
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Word History
First Known Use
1961, in the meaning defined above
Dictionary Entries Near operating system
Cite this Entry
“Operating system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/operating%20system. Accessed 9 Jan. 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
Nglish: Translation of operating system for Spanish Speakers
Britannica.com: Encyclopedia article about operating system
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