[{"word":"betatron","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A form of cyclotron used to accelerate electrons to high speed.","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/betatron"]}]