[{"word":"fresnel","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A unit of frequency equal to 1012 hertz, or one terahertz.","synonyms":[],"antonyms":[]},{"definition":"A Fresnel lens or a light feature using such a lens","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/fresnel"]}]