from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A scapolite mineral.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral of the scapolite group; -- so called from the double effect of fire upon it, in fusing it, and rendering it phosphorescent.
from The Century Dictionary and Cyclopedia
- n. A mineral occurring in square prisms, either single or adbering to one another in fascicular groups.
Ancient Greek twice fire; so called from the double effect of fire upon it, in fusing it and rendering it phosphorescent. (Wiktionary)