[{"word":"marcasites","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The orthorhombic form of iron disulfide, FeS2, occurring as yellow crystals.","synonyms":["white iron pyrite"],"antonyms":[]},{"definition":"(jewellery) Pyrite.","synonyms":[],"antonyms":[]},{"definition":"Any of various metal sulfides, usually iron sulfide minerals.","synonyms":[],"antonyms":[]}],"synonyms":["white iron pyrite"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/marcasite","https://en.wiktionary.org/wiki/marcasites"]}]