up quark Definition

down quark, lambda particle, bottom quark, color force, fundamental particle, strong force, beauty quark, baryon number, gauge boson, antineutron, truth quark, strong interaction, quarkonium, weak force, quantum number, lepton number, tauon, strange quark, pi meson, antitauon, muonium, antimuon, quark, antilepton, antinucleon, antibaryon, electric charge, nucleon, separation energy, mesotron, mesonic, subatomic particle, neutron, mass number, neutron number, hadron, nuclear reaction, fundamental interaction, gravitino, beta particle, photoneutron, boson, delta ray, gravitational force, mu meson, gyromagnetic ratio, baryon, neutrino, proton, muon, subatomic, subatom, electron, electron shell, photon, particle beam, weak interaction, photonuclear, magnetic monopole, gluon, compton effect, fermion, lepton, relative atomic mass, negative charge, hydrogen atom, photofission, antiquark, protyle, atom, cosmotron, atomic mass, deuteron, mean free path, thermalize, particle, quantum chromodynamics, antiparticle, hyperfine structure, electromagnetic interaction, charm quark, heisenberg uncertainty principle, graviton, atomic weight, pauli exclusion principle, pentatomic, hexatomic, mev, cosmological constant, antiproton, photodisintegration, thermion, gravitational field, relativistic, protonate, magnetic moment, hodoscope, pair production, polybromide, nuclear fusion,