Meaning of PROTON in English

/ ˈprəʊtɒn; NAmE ˈproʊtɑːn/ noun

( physics ) a very small piece of matter (= a substance) with a positive electric charge that forms part of the nucleus (= central part) of an atom

—see also electron , neutron



1920s: from Greek , neuter of prōtos first.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.