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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Amazon is set to shutter its Amazon Appstore on the Android operating system Wednesday, Aug. 20. James Powel, USA Today, 17 Aug. 2025 Downloads had been seen as one key industry metric, but those numbers also are wonky as changes to Apple’s operating system continue to negatively impact the numbers. Caitlin Huston, HollywoodReporter, 14 Aug. 2025 The interface largely centers on clock faces and widgets — small software features that are typically dedicated to specific tasks. Charismatic, which was previously known as Pebble and Rock earlier in development, blends the approach of the Apple TV and Apple Watch operating systems. Bloomberg, Mercury News, 14 Aug. 2025 Musk went on to threaten to bar all Apple devices from his companies if OpenAI technology was integrated into iOS operating systems. Beatrice Nolan, Fortune, 13 Aug. 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 22 Aug. 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)

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