from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A black or brown amorphous metallic complex uranium yttrium oxide mineral, found in granitic pegmatites.
from The Century Dictionary and Cyclopedia
- n. A rare titanoniobate of uranium, the metals of the yttrium group, and other bases: it is found in Norway, and also in North Carolina.
Sorry, no etymologies found.