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English definition of “transistor”

transistor

noun [C]     /trænˈzɪs.tər/ US  /-ˈzɪs.tɚ/
a small electrical device containing a semiconductor, used in televisions, radios, etc. to control or increase an electric currentElectrical components and circuitry (also transistor radio, informal trannie) a small radio containing transistors, used especially in the pastRadio
(Definition of transistor noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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