单词	nucleon
释义	nucleon noun nu·​cle·​on ˈnü-klē-ˌän  ˈnyü- 1 : a proton or neutron especially in the atomic nucleus 2 : a hypothetical single entity with one-half unit of isospin that can manifest itself as either a proton or a neutron nucleonic ˌnü-klē-ˈä-nik  ˌnyü- adjective Example Sentences Recent Examples on the Web Her model explained why certain numbers of nucleons make for stable atomic configurations. Courtney Linder, Popular Mechanics, 25 Feb. 2020 Her model explained why certain numbers of nucleons make for stable atomic configurations. Courtney Linder, Popular Mechanics, 25 Feb. 2020 Her model explained why certain numbers of nucleons make for stable atomic configurations. Courtney Linder, Popular Mechanics, 25 Feb. 2020 Her model explained why certain numbers of nucleons make for stable atomic configurations. Courtney Linder, Popular Mechanics, 25 Feb. 2020 The isotope is created by a nuclear reaction, and the research team believes the nucleus wobbles because of one extra nucleon. Caroline Delbert, Popular Mechanics, 12 Feb. 2020 Plenty of nuclei have odd numbers of nucleons overall, but this gold isotope is a rare one because of the wobbling. Caroline Delbert, Popular Mechanics, 12 Feb. 2020 Oxygen atoms, for example, have eight protons, but may have eight or ten neutrons, for a total of 16 or 18 nucleons. The Economist, 1 Aug. 2019 Atomic nuclei are made of protons and neutrons, known collectively as nucleons. The Economist, 1 Aug. 2019 See More Word History Etymology International Scientific Vocabulary First Known Use 1923, in the meaning defined at sense 1 Medical Definition nucleon noun nu·​cle·​on ˈn(y)ü-klē-ˌän  : a nuclear particle: a : proton b : neutron
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