### Definitions Found:

# an elementary particle

- photonan elementary particle
- hadronan elementary particle
- electronan elementary particle
- tauonan elementary particle
- hadronsHADRON, an elementary particle
- electronsELECTRON, an elementary particle
- tauonsTAUON, an elementary particle
- photonsPHOTON, an elementary particle
- photonicpertaining to photon (an elementary particle)
- polarona type of electron (an elementary particle)
- kaonicof or like a kaon, an elementary particle
- polaronsPOLARON, a type of electron (an elementary particle)
- neutronselementary particle having no charge, found in the nucleus of an atom
- neutronelementary particle having no charge, found in the nucleus of an atom
- lambdauncharged unstable elementary particle that has a mass 2183 times that of an electron and that decays typically into a nucleon and a pion
- spinlessquantum characteristic of an elementary particle that is visualized as the rotation of the particle on its axis and that is responsible for measurable angular momentum and magnetic moment
- gravitonthe theoretical quantum of gravitation, usually assumed to be an elementary particle that is its own antiparticle and that has zero rest mass and charge and a spin of two
- tausshort-lived elementary particle of the lepton family that exists in positive and negative charge states and has a mass about 3500 times greater than an electron called also tau particle
- taushort-lived elementary particle of the lepton family that exists in positive and negative charge states and has a mass about 3500 times greater than an electron called also tau particle
- antiparticlethe 'pair' of an elementary particle, particle and antiparticle being mutually destructive, having the same mass and spin but having opposite values for their other properties (eg charge, baryon number, strangeness)
- antiparticlesANTIPARTICLE, the 'pair' of an elementary particle, particle and antiparticle being mutually destructive, having the same mass and spin but having opposite values for their other properties (eg charge, baryon number, strangeness)
- protonican elementary particle that is identical with the nucleus of the hydrogen atom, that along with the neutron is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron, and that has a mass of 1.673 Î 10-27 kilogram
- tachyona theoretical elementary particle
- tachyonsTACHYON, a theoretical elementary particle
- particlesAnother term for elementary particle
- particleAnother term for elementary particle
- anyonelementary particle or particle-like excitation having properties intermediate between those of bosons and fermions
- anyonselementary particle or particle-like excitation having properties intermediate between those of bosons and fermions
- baryonsproton, neutron, or any elementary particle that decays into a set of particles that includes a proton
- baryonproton, neutron, or any elementary particle that decays into a set of particles that includes a proton
- hadronsany elementary particle that is subject to the strong interaction. Hadrons are subdivided into baryons and mesons
- hadronany elementary particle that is subject to the strong interaction. Hadrons are subdivided into baryons and mesons
- hadronicany elementary particle that is subject to the strong interaction. Hadrons are subdivided into baryons and mesons
- wimpany of a group of weakly interacting elementary particles predicted by various unified field theories, as the W particle and Z-zero particle, that are characterized by relatively large masses
- wimpsany of a group of weakly interacting elementary particles predicted by various unified field theories, as the W particle and Z-zero particle, that are characterized by relatively large masses