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English definition of “positron”

positron

noun [C]     /ˈpɒz.ɪ.trɒn/ US  /ˈpɑː.zɪ.trɑːn/ specialized
an extremely small piece of matter with a positive electrical charge, having the same mass as an electronElectricity and electronicsAtoms, molecules and sub-atomic particles
(Definition of positron noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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