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Synonyms

CPU

American  

abbreviation

Computers.

  1. central processing unit: the key component of a computer system, which contains the circuitry necessary to interpret and execute program instructions.

CPU British  

abbreviation

  1. central processing unit

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
CPU Scientific  

  1. Abbreviation of central processing unit

CPU Cultural  

  1. An abbreviation for c entral p rocessing u nit. The “brain” of a computer, the CPU is where data manipulation actually takes place. The results of these manipulations are then stored in the computer memory. Microprocessors perform this function in personal computers.

Etymology

Origin of CPU

First recorded in 1965–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Explosive growth in the usage of accelerated processors “is driving real server CPU demand.”

From MarketWatch • Apr. 24, 2026

Earlier this week, Amazon announced an additional $5 billion investment in Anthropic, which included the AI company using tens of millions of AWS Graviton CPU cores.

From The Wall Street Journal • Apr. 24, 2026

But with inference, the ratio is more like one CPU for every three or four GPUs.

From MarketWatch • Apr. 23, 2026

Intel shares have benefited from foundry and CPU optimism — but the excitement may be out of step with reality, analysts say.

From The Wall Street Journal • Apr. 22, 2026

CPU sits on my foot and licks my sock.

From "The Tenth Mistake of Hank Hooperman" by Gennifer Choldenko

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.