[{"word":"lanthanides","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Any of the 14 rare earth elements from cerium (or from lanthanum) to lutetium in the periodic table; because their outermost orbitals are empty, they have very similar chemistry; below them are the actinides.","synonyms":[],"antonyms":[]}],"synonyms":["-ide","lanthanon","lanthanate","lanthanoid","lanthanum","rare-earth element"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/lanthanide","https://en.wiktionary.org/wiki/lanthanides"]}]