hadron

== English == === Etymology === From Ancient Greek ἁδρός (hadrós, “thick”) +‎ -on. Coined by Russian physicist Lev Okun in 1962 in a plenary talk at the International Conference on High Energy Physics. === Pronunciation === (Received Pronunciation) IPA(key): /ˈhæd.ɹɒn/ (General American) IPA(key): /ˈhæd.ɹɑn/ === Noun === hadron (plural hadrons) (particle physics) 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.) ==== Hyponyms ==== baryon meson ==== Derived terms ==== ==== Translations ==== === Further reading === Quark on Wikipedia.Wikipedia Quark model on Wikipedia.Wikipedia Standard Model on Wikipedia.Wikipedia Subatomic particle on Wikipedia.Wikipedia List of particles on Wikipedia.Wikipedia Large Hadron Collider on Wikipedia.Wikipedia === Anagrams === Drohan, Hardon, Hrodna, Rhonda, hard on, hard-on, hardon == Dutch == === Pronunciation === Hyphenation: ha‧dron === Noun === hadron n (plural hadronen, no diminutive) (particle physics) hadron == French == === Pronunciation === === Noun === hadron m (plural hadrons) hadron == Polish == === Pronunciation === IPA(key): /ˈxa.drɔn/ Rhymes: -adrɔn Syllabification: ha‧dron === Noun === hadron m inan (particle physics) hadron ==== Declension ==== === Further reading === hadron in Polish dictionaries at PWN == Romanian == === Etymology === Borrowed from English hadron or French hadron. === Noun === hadron m (plural hadroni) hadron ==== Declension ==== == Serbo-Croatian == === Pronunciation === IPA(key): /xǎdroːn/ Hyphenation: had‧ron === Noun === hàdrōn m inan (Cyrillic spelling ха̀дро̄н) (particle physics) hadron ==== Declension ==== == Slovene == === Pronunciation === IPA(key): /xadróːn/ === Noun === hadrọ̑n m inan (particle physics) hadron ==== Declension ==== == Turkish == === Noun === hadron (definite accusative hadronu, plural hadronlar) (particle physics) hadron ==== Declension ====