WordReference Random House Unabridged Dictionary of American English © 2025
tac•o•nite
(tak′ə nīt′),USA pronunciation n.
- Mineralogya low-grade iron ore, containing about 27 percent iron and 51 percent silica, found as a hard rock formation in the Lake Superior region.
- 1890–95, American; named after the Taconic mountain range (east of the Hudson River); see -ite1