English version

positron

From Longman Dictionary of Contemporary Englishpositronpos‧i‧tron /ˈpɒzətrɒn $ ˈpɑːzətrɑːn/ noun [countable] technical  a very small piece of matter that has the same mass as an electron but has a positive electrical charge
Examples from the Corpus
positronWhen an electron collides with a positron the two particles disappear, or annihilate, to create a high-energy photon.The Dark Era begins when space is dominated by tiny particles such as photons, electrons and positrons.
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