[{"word":"butadiene","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"An unsaturated hydrocarbon, CH2=CH-CH=CH2; it is obtained from petroleum and is used in the preparation of the synthetic rubber polybutadiene.","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/butadiene"]}]