central processing unit

noun

plural central processing units
: the component of a computer system that performs the system's basic operations (such as processing data), that exchanges data with the system's memory or peripherals, and that manages the system's other components : cpu

Examples of central processing unit in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Accelerators are just one component of AI compute systems, which also include central processing units (CPUs), networking equipment for transmitting data, and memory and storage systems for retaining data. Kevin Stankiewicz,jeff Marks, CNBC, 19 Aug. 2026 The funding will help CAEPlus develop BoundaryCool, a system that pulls heat away from graphics processing units (GPUs), central processing units (CPUs), and tensor processing units (TPUs) using active liquid cooling. Neetika Walter, Interesting Engineering, 17 Aug. 2026 And those signals travel to some central processing units so that the animal knows to like move away. Quanta Magazine, 6 Aug. 2026 See All Example Sentences for central processing unit

Word History

First Known Use

1956, in the meaning defined above

Time Traveler
The first known use of central processing unit was in 1956

Browse Nearby Words

Cite this Entry

“Central processing unit.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/central%20processing%20unit. Accessed 26 Aug. 2026.

Kids Definition

central processing unit

noun
: CPU

More from Merriam-Webster on central processing unit

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster