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motherboard noun
/ˈmʌð.ə.bɔːd/
/-ɚ.bɔːrd/ n [C] specialized Definition
the main printed circuit board that contains the CPU of a computer and makes it possible for the other parts of a computer to communicate with each other
(Definition of motherboard noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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