[{"word":"coltan","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A metallic ore, (Fe,Mn)(Ta,Nb)2O6, from which the elements niobium and tantalum are extracted.","synonyms":["columbite-tantalite"],"antonyms":[],"example":"Coltan is used for the production of tantalum capacitors."}],"synonyms":["columbite-tantalite"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/coltan"]}]