taconitePronunciation: /ˈtakənʌɪt/Definition of taconite noun [mass noun] a low-grade iron ore consisting largely of chert, occurring chiefly around Lake Superior in North America. Origin: early 20th century: from the name of the Taconic Range of mountains, US, + -ite1taconite in other Oxford dictionaries Definition of taconite in the US English dictionary
