| Definition/Meaning | Word/Phrase |
| unstable negatively charged proton; the antiparticle of a proton |
antiproton
|
| any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1 |
baryon
,
heavy particle
|
| large proton synchrotron; uses frequency modulation of an electric field to accelerate protons |
cosmotron
|
| nucleus of deuterium; consists of one proton and one neutron; used as a bombarding particle in accelerators |
deuteron
|
| use of nuclear magnetic resonance of protons to produce proton density images |
magnetic resonance imaging
,
MRI
|
| elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus |
neutron
|
| constituent (proton or neutron) of an atomic nucleus |
nucleon
|
| neutron or proton |
nucleon
|