proton [protons](positively charged nucleon) noun [UK: ˈprəʊ.tɒn] [US: ˈproʊ.tɒn]Protons have a positive electric charge. = Los protones tienen carga eléctrica positiva.
protónico adjective
pretonic(immediately preceding a stressed syllable) adjective [UK: prɪtˈɒnɪk] [US: prɪtˈɑːnɪk]