[{"word":"cytosine","phonetic":"/ˈsaɪtəsiːn/","phonetics":[{"text":"/ˈsaɪtəsiːn/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).","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/cytosine"]}]