#hadron  any elementary particle that interacts strongly with other particles
  supertype:  #elementary_particle__fundamental_particle__fundamentalparticle__subatomicparticle  a particle that is less complex than an atom; regarded as constituents of all matter
  part:  #antiquark  #quark
  subtype:  #antibaryon  the antiparticle of a baryon; a hadron with a baryon number of -1
  subtype:  #antimeson  the antiparticle of a meson
  subtype:  #baryon__heavy_particle__heavyparticle  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
     subtype:  #hyperon  any baryon that is not a nucleon; unstable particle with mass greater than a neutron
        subtype:  #lambda_particle__lambda_hyperon  an electrically neutral baryon with isotopic spin 1
     subtype:  #nucleon  a constituent (proton or neutron) of an atomic nucleus
        subtype:  #antineutron  the antiparticle of a neutron
        subtype:  #antiproton  an unstable negatively charged proton; the antiparticle of a proton
        subtype:  #neutron  an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus
        subtype:  #proton  a stable particle with positive charge equal to the negative charge of an electron
           subtype:  #hydrogen_ion  a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus
  subtype:  #meson__mesotron  an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0
     subtype:  #b-meson__bmeson  exceedingly short-lived meson
     subtype:  #J_particle__psi_particle__psiparticle  a neutral meson with a large mass
     subtype:  #kaon__kappa-meson__kappameson__k-meson__kmeson__K_particle  an unstable meson produced as the result of a high-energy particle collision
     subtype:  #pion__pi-meson  a meson produced as the result of high-energy particle collision

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