[{"word":"ketene","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Any of a class of unsaturated ketones, having a general formula R1R2C=C=O, that react as if they were inner acid anhydrides","synonyms":[],"antonyms":[]},{"definition":"The parent compound of this class, CH2=C=O, an unstable, reactive colourless 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/ketene"]}]