[{"word":"hypersonic","phonetics":[],"meanings":[{"partOfSpeech":"adjective","definitions":[{"definition":"(of a speed) equal to, or greater than, or capable of achieving, five times the speed of sound.","synonyms":[],"antonyms":[]},{"definition":"(of a speed) far enough above the speed of sound as to cause significant differences in behaviour due to chemical reactions or disassociation of the air.","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/hypersonic"]}]