[{"word":"columbite","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum.","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/columbite"]}]