[{"word":"leptin","phonetic":"/ˈlɛptɪn/","phonetics":[{"text":"/ˈlɛptɪn/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A protein hormone produced in adipose tissue; it plays a role in regulating appetite and metabolism.","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/leptin"]}]