proton [protons](positively charged nucleon) noun [UK: ˈprəʊ.tɒn] [US: ˈproʊ.tɒn]The electrons are friends with the neutrons and protons. = Gli elettroni sono amici dei neutroni e dei protoni.
antiprotonenoun {m}
antiproton [antiprotons](antiparticle of the proton) noun [UK: ˌantɪprˈəʊtɒn] [US: ˌæntɪprˈoʊtɑːn]