[{"word":"niacin","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A water-soluble vitamin, a component of vitamin B complex, found in meat, yeast, and dairy products; it is essential to metabolism.","synonyms":[],"antonyms":[]}],"synonyms":["E375","colour retention agent","PP-factor","pellagra-preventive factor","vitamin P-P","vitamin PP","nicotinic acid","vitamin B3"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/niacin"]}]