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BNC: 44376 COCA: 22917

positron

Word family
pos·i·tron /ˈpɒzətrɒn $ ˈpɑːzətrɑːn/ noun [countableC] technical  
a very small piece of matter that has the same mass as an electron but has a positive electrical charge 正电子
Examples from the Corpus
Origin positron
(1900-2000) positive + -tron (as in electron)
pos·i·tron noun
Chinese
Syllable
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