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positron
noun
pos·i·tron ˈpä-zə-ˌträn 
: a positively charged particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of the electron
called also antielectron
Example Sentences
Recent Examples on the Web The antiparticle version of an electron, for instance, is a positron. 
Caroline Delbert, Popular Mechanics, 21 Sep. 2021 The dance between positron and antiproton in antihydrogen should exactly follow that of the electron and proton in hydrogen. Sophia Chen, Wired, 19 Feb. 2020 In contrast, the higher energies used in the ALPHA experiment slow antiprotons and positrons down enough for the particles to form atoms of antihydrogen for more in-depth study. Jonathan O'callaghan, Scientific American, 19 Feb. 2020 Sometimes, the photon immediately decays into an electron and a positron, which are propelled forward by the photon’s momentum and strike the detector near one another. Quanta Magazine, 7 June 2016 Richard Feynman, a young professor at Cornell, had invented a novel method to describe the behavior of electrons and photons (and their antimatter equivalent, positrons). George Johnson, SFChronicle.com, 29 Feb. 2020 The electron, quark, and muon, for example, are paired with the positron, antiquark, and antimuon, respectively. Sophia Chen, Wired, 19 Feb. 2020 Bananas, which contain trace amounts of radioactive potassium, emit a positron every 75 minutes. Sophia Chen, Wired, 19 Feb. 2020 By contrast, the researchers observed that some electrons and positrons seem to be correlated in their emission direction. Chris Lee, Ars Technica, 20 Dec. 2019 See More
Caroline Delbert, Popular Mechanics, 21 Sep. 2021 The dance between positron and antiproton in antihydrogen should exactly follow that of the electron and proton in hydrogen. Sophia Chen, Wired, 19 Feb. 2020 In contrast, the higher energies used in the ALPHA experiment slow antiprotons and positrons down enough for the particles to form atoms of antihydrogen for more in-depth study. Jonathan O'callaghan, Scientific American, 19 Feb. 2020 Sometimes, the photon immediately decays into an electron and a positron, which are propelled forward by the photon’s momentum and strike the detector near one another. Quanta Magazine, 7 June 2016 Richard Feynman, a young professor at Cornell, had invented a novel method to describe the behavior of electrons and photons (and their antimatter equivalent, positrons). George Johnson, SFChronicle.com, 29 Feb. 2020 The electron, quark, and muon, for example, are paired with the positron, antiquark, and antimuon, respectively. Sophia Chen, Wired, 19 Feb. 2020 Bananas, which contain trace amounts of radioactive potassium, emit a positron every 75 minutes. Sophia Chen, Wired, 19 Feb. 2020 By contrast, the researchers observed that some electrons and positrons seem to be correlated in their emission direction. Chris Lee, Ars Technica, 20 Dec. 2019 See More Word History
Etymology
positive + -tron (as in electron)
First Known Use
1933, in the meaning defined above
Time Traveler
The first known use of positron was in 1933 Phrases Containing positron
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