[{"word":"infrasonic","phonetics":[],"meanings":[{"partOfSpeech":"adjective","definitions":[{"definition":"(of sound waves, acoustics) Having frequencies below the human audible range","synonyms":[],"antonyms":[]},{"definition":"(of a device) Generating or employing such sound waves","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":["ultrasonic"]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/infrasonic"]}]