#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
  subtype:  #antibaryon  #antimeson  #baryon  #meson
  part:  #antiquark  the antiparticle of a quark
  part:  #quark  hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3

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