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Definition of central processing unit noun from the Oxford Advanced Learner's Dictionary

central processing unit

noun
 
/ˌsentrəl ˈprəʊsesɪŋ juːnɪt/
 
/ˌsentrəl ˈprɑːsesɪŋ juːnɪt/
 (computing)
(abbreviation CPU)
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  1. the part of a computer that controls all the other parts of the systemTopics Computersc2
See central processing unit in the Oxford Advanced American Dictionary
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