from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An isometric-hexoctahedral mineral containing aluminum, fluorine, hydrogen, magnesium, oxygen, and sodium.
from the GNU version of the Collaborative International Dictionary of English
- n. A fluoride of alumina and soda occurring with the Greenland cryolite in octahedral crystals.
from The Century Dictionary and Cyclopedia
- n. A fluoride of aluminium and calcium, occurring in transparent isometric octahedrons with cryolite in Greenland.