nucleon nucleomicrosome • nucleone · · · Info · Definitions · Characters · · nucleon · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) a constituent (proton or neutron) of an atomic nucleus. · · Noun Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F u latin small letter u U+0075