[{"word":"ultramarathon","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A running race over a distance longer than 42.195 km, the length of a standard marathon.","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/ultramarathon"]}]