hadron

Etymology
From. in a plenary talk at the.

Noun

 * 1)  A composite particle that comprises two or more quarks held together by the strong force and (consequently) can interact with other particles via said force; a meson or a baryon.

Usage notes

 * Aside from individual quarks (which are never observed by themselves) hadrons are the only particles that interact via the strong force. Thus, a possible (though potentially slightly misleading) definition is "composite particle that can interact via the strong force" - or indeed simply "composite particle", as all hadrons are composite and all known non-hadrons are not known to be composite. Either definition however will be non-marginally wrong if the existence of the hypothetical "glueballs", non-hadronic composite particles consisting of gluons, is confirmed.
 * The two categorisations hadron versus non-hadron and fermion versus boson together turn out to comprise a useful high-level categorisation of subatomic particles. (See the diagram above.)
 * (Missing from the diagram are quarks, the building blocks of hadrons. They are elementary, and therefore not themselves hadrons; they are, however, fermions. Thus, they would be classified, alongside leptons, as non-hadronic fermions.)

Translations

 * Armenian: հադրոն
 * Basque:
 * Catalan:
 * Chinese:
 * Mandarin:
 * Czech:
 * Dutch:
 * Esperanto: hadrono
 * Finnish:
 * French:
 * Galician:
 * Georgian: ჰადრონი
 * German:
 * Greek:
 * Ido: hadrono
 * Italian:
 * Japanese: ハドロン
 * Kazakh: адрон
 * Khmer: បុថូណូ, ប្រថូណូ
 * Korean: 강입자
 * Macedonian: хадро́н
 * Persian:
 * Polish:
 * Portuguese: hadrão, hádron
 * Russian:
 * Serbo-Croatian:
 * Cyrillic: ха̀дро̄н
 * Roman:
 * Slovak: hadrón
 * Slovene: hadrón
 * Spanish:
 * Swedish:
 * Turkish: hadron

Etymology
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