noun🔗Share核子One of the subatomic particles of the atomic nucleus, i.e. a proton or a neutron."The atomic nucleus is made of nucleons: protons and neutrons bound together. "原子核は、陽子と中性子という核子で構成され、互いに結合しています。physicspartelementsciencestructuremassChat with AIVocabulary GamePractice Reading