#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
  supertype:  #hadron  #fermion
  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

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