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

Select both Software Updates (for the operating system) and App updates to make sure everything is automatically updated. — Larry Magid, Mercury News, 16 July 2026

On Monday, defense software company Auterion and Ukrainian drone maker Skyfall announced a 90-million-euro order for 50,000 drones equipped with Auterion's operating system from a European NATO member. — Elsa Ohlen, CNBC, 15 July 2026

Threat extends to Windows and Linux users The threat extends to Windows and Linux users alike, since the shim can be installed on devices running both operating systems. — Dan Goodin, ArsTechnica, 14 July 2026

The lawsuit sets up a battle over who will control future AI devices that may not use traditional apps or operating systems — devices which, if successful, would direct consumer attention away from Apple's best-selling iPhone. — Stephen Nellis, USA Today, 11 July 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)