pentaquark

== English == === Etymology === From penta- + quark. === Pronunciation === (Received Pronunciation) IPA(key): /ˈpɛntəkwɔːk/, /-kwɑːk/ (General American) IPA(key): /ˈpɛntəkwɔɹk/, /-kwɑɹk/ Hyphenation: pen‧ta‧quark === Noun === pentaquark (plural pentaquarks) (particle physics) Any of a class of subatomic particles (previously hypothetical, since detected, subject to confirmation) consisting of a group of five quarks (compared to three quarks in normal baryons and two in mesons), or more specifically four quarks and one antiquark (symbol Θ). ==== Related terms ==== tetraquark ==== Translations ==== == French == === Etymology === From penta- +‎ quark. === Pronunciation === IPA(key): /pɛ̃.ta.kwaʁk/ === Noun === pentaquark m (plural pentaquarks) (physics) pentaquark == Italian == === Etymology === From penta- +‎ quark. === Noun === pentaquark m (invariable) (physics) pentaquark