[{"word":"pentaquark","phonetic":"/-kwɑːk/","phonetics":[{"text":"/-kwɑːk/","audio":"https://api.dictionaryapi.dev/media/pronunciations/en/pentaquark-uk.mp3","sourceUrl":"https://commons.wikimedia.org/w/index.php?curid=91373186","license":{"name":"BY-SA 4.0","url":"https://creativecommons.org/licenses/by-sa/4.0"}},{"text":"/-kwɑɹk/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"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).","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/pentaquark"]}]