[{"word":"metamaterials","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Any material that obtains its electromagnetic properties from its structure rather than from its chemical composition; especially a material engineered to have features of a size less than that of the wavelength of a class of electromagnetic radiation","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/metamaterial","https://en.wiktionary.org/wiki/metamaterials"]}]