noun, often capitalized C&P&U \ˌsē-(ˌ)pē-ˈyü\

Definition of CPU

:  the component of a computer system that performs the basic operations (as processing data) of the system, that exchanges data with the system's memory or peripherals, and that manages the system's other components —called also processor

Origin of CPU

central processing unit
First Known Use: 1962

Other Computer-Related Terms

adware, flash, kludge, phishing, recursive, router
CPU Defined for Kids


noun , often cap C&P&U \ˌsē-ˌpē-ˈyü\

Definition of CPU for Kids

:  the part of a computer that does most of the processing of data


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