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

Lemay has been with Apple since 1999 and played a key role in designing every major Apple interface from the original iPhone to the latest operating systems. —Dave Smith, Fortune, 8 Dec. 2025

The mobile, two-legged humanoid robot will function as the hardware platform integrated directly into Agroz OS, the proprietary farm operating system. —Mrigakshi Dixit, Interesting Engineering, 5 Dec. 2025

According to local media reports, smartphone makers and operating system providers claimed that there was no prior consultation with the industry on the preinstallation mandate. —Priyanka Salve, CNBC, 4 Dec. 2025

The mandate by India also upsets the unwritten détente between the makers of smartphone operating systems and law enforcement agencies around the world. —Rachyl Jones, semafor.com, 3 Dec. 2025

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)