#elementary_particle__fundamental_particle__fundamentalparticle__subatomicparticle  a particle that is less complex than an atom; regarded as constituents of all matter
  supertype:  particle  a body having finite mass and internal structure but negligible dimensions
  subtype:  antilepton  antiparticle  antiquark  hadron  lepton  quark  strange_particle
  part of:  atom  (physics and chemistry) the smallest component of an element having the chemical properties of the element
     part of:  chemical_element__element  any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
     part of:  molecule  (physics and chemistry) the simplest structural unit of an element or compound

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