[{"word":"kerogen","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Any organic matter present in a sedimentary rock that is insoluble in organic solvents; the precursor of oil and natural gas","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/kerogen"]}]