from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A rare yellow radioactive calcium uranium silicate hydrate mineral that forms from the oxidation of uranium-bearing minerals.
from The Century Dictionary and Cyclopedia
- n. A hydrous silicate of uranium and calcium which occurs in radiated aggregates of acicular crystals having a bright yellow color: probably the same mineral as uranotil.
urano- + phane (Wiktionary)