The term "hadron" is a new Greek word introduced by L.B. Okun in a plenary talk at the 1962 International Conference on High Energy Physics at CERN. He opened his talk with the definition of a new category term: See more

Baryons are hadrons containing an odd number of valence quarks (at least 3). Most well known baryons such as the proton and neutron have three valence quarks, but See more

• Exotic hadron
• Hadron therapy, a.k.a. particle therapy
• Hadronization, the formation of hadrons out of quarks and gluons
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According to the quark model, the properties of hadrons are primarily determined by their so-called valence quarks. … See more

Mesons are hadrons containing an even number of valence quarks (at least 2). Most well known mesons are composed of a quark-antiquark pair, but possible tetraquarks (4 quarks) and hexaquarks (6 quarks, comprising either a dibaryon or three quark … See more

• The dictionary definition of hadron at Wiktionary See more