from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A variety of the mineral kyanite.
from the GNU version of the Collaborative International Dictionary of English
- n. A variety of the mineral cyanite.
from The Century Dictionary and Cyclopedia
- n. A white variety of cyanite, found at Greiner in Tyrol. Also rhetizite.
So called from Latin Rhaetia, Raetia, the Rhetian Alps, where it is found. (Wiktionary)