[{"word":"cardioid","phonetics":[{"audio":"https://api.dictionaryapi.dev/media/pronunciations/en/cardioid-us.mp3","sourceUrl":"https://commons.wikimedia.org/w/index.php?curid=50330718","license":{"name":"BY-SA 4.0","url":"https://creativecommons.org/licenses/by-sa/4.0"}}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"An epicycloid with exactly one cusp; the plane curve with polar equation \\rho = 1 + \\cos\\,\\theta - approximately heart-shaped","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]},{"partOfSpeech":"adjective","definitions":[{"definition":"Having this characteristic shape","synonyms":[],"antonyms":[]},{"definition":"(of a microphone) sensitive in front, but not behind or at the sides","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/cardioid"]}]