nindexnucleon./noo-klee-on, nyoo-/US // ˈnu kliˌɒn, ˈnyu- //UK // (ˈnjuːklɪˌɒn) //核子,核素,核电Definitionsn.noun · 名词1. Physics.›a proton or neutron, especially when considered as a component of a nucleus. Level 3More words in n →