noun. Either of the two fermions (the proton and the neutron). Nucleons have one-half unit of spin and are basic components of all atomic nuclei.

noun. A neutron or proton, when contained within an atomic nucleus.

noun. One of the subatomic particles of the atomic nucleus, i.e. a proton or a neutron.

noun. a constituent (proton or neutron) of an atomic nucleus

"My work on its specific application to particle physics as a mechanism for generation of the nucleon mass and the pion was first published in 1960."

nucleon number  nucleonics  

baryon  heavy particle  

antineutron  antiproton  neutron  proton