🌐EnglishEnglishEspañolFrançaisItalianoPortuguêsРусскийالعربيةفارسیहिन्दी中文日本語EntityQ2778804· pop 13· linked from 174 articlesmesonic moleculeset of two or more mesons bound together by strong forceAvailable in 13 languagesEspañolFrançais日本語РусскийPortuguêsItalianoالعربيةहिन्दीCatalanFilipinoConnectionstauEntityup quarkEntityCategoriesHypothetical composite particles