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

Users can activate those microphones to use voice assistance features provided through third-party operating systems or applications. — John Higgins, The Verge, 11 Nov. 2026

Under the partnership, Changshin will apply Palantir’s Artificial Intelligence Platform (AIP) and Palantir Foundry, an enterprise operating system. — Roy Stephen Canivel, Footwear News, 6 Nov. 2026

Co-founder Nemmert supervised the build of Lokia’s operating system (Lokia OS) and runs the company’s operations and production side. — Andreas Wiseman, Deadline, 6 Nov. 2026

Roku’s operating system powers its own streaming devices and is built into TVs. — Winston Cho, HollywoodReporter, 6 Nov. 2026

Word History

First Known Use

1961, in the meaning defined above

Rhymes for operating system

• cryptosystem
• ecosystem
• intersystem
• multisystem
• photosystem
• subsystem

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)