/ ˈpɒzɪtrɒn; NAmE ˈpɑːzɪtrɑːn/ noun
( physics ) a particle in an atom which has the same mass as an electron and an equal but positive charge
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WORD ORIGIN
1930s: from positive + -tron .
/ ˈpɒzɪtrɒn; NAmE ˈpɑːzɪtrɑːn/ noun
( physics ) a particle in an atom which has the same mass as an electron and an equal but positive charge
••
WORD ORIGIN
1930s: from positive + -tron .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005